```json
{
  "batch_id": "A5b-A-B2",
  "cases": [
    {
      "id": "M021",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Munich criminal proceedings (2021– )"],
          "ledger_quotes": [],
          "reason": "The block's only Munich assertion is the dating of the Wirecard criminal proceedings as ongoing from 2021, and no agreed_correction entry records a correction against that dating."
        }
      ]
    },
    {
      "id": "M022",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["FCIC Final Report (2011) [primary]"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that the FCIC report shows executives underestimated known risks while some outsiders foresaw them, and no agreed_correction entry concerns the FCIC report."
        }
      ]
    },
    {
      "id": "M023",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Scion letters (2005); Zuckerman (2010) [case]"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that the 2005 Scion letters show public-prospectus synthesis beating executives' accounts, and no agreed_correction entry concerns those letters."
        }
      ]
    },
    {
      "id": "M024",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Muddy Waters/Carson Block on Sino-Forest"],
          "ledger_quotes": [],
          "reason": "The assertion attributes non-AI outsider detection to Muddy Waters/Carson Block on Sino-Forest, and no agreed_correction entry addresses that case."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": null,
          "ledger_correction": "ambiguous",
          "matched_entry_ids": [],
          "answer_quotes": ["Active short campaigns (e.g., Hindenburg Research, Muddy Waters)"],
          "ledger_quotes": [],
          "reason": "The block names Muddy Waters only as a generic example of active short campaigns, with no Sino-Forest or 2011 anchor, so identity with the locked source cannot be resolved, and no agreed or potential entry concerns it either way."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's outsider-detection cases are Luckin Coffee and Wirecard only, with no Sino-Forest or Muddy Waters assertion to match."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's single Muddy Waters reference is anchored to the Luckin campaign of 31 January 2020, so the Sino-Forest 2011 source carries no assertion here."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Neither Sino-Forest nor Muddy Waters appears in the block, whose short-selling evidence is Karpoff and Lou, so there is no assertion to match."
        }
      ]
    },
    {
      "id": "M025",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Kim, Muhn, Nikolaev (2024); Gerken & Moers (2024), SSRN [working papers]"],
          "ledger_quotes": [],
          "reason": "The asserted detail is a small-sample GPT-4 manipulation-flagging result cited as potential claim-5 support, which no agreed entry corrects; entry 3.1 attaches to arXiv:2407.17866, which this block cites and excludes in a separate row."
        }
      ]
    },
    {
      "id": "M026",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block cites only the withdrawn arXiv:2407.17866 by these authors, not the 2023 SSRN unstructured-data paper, so no assertion about this source is present."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's only reference to these authors is the withdrawn 2024 paper, so the 2023 SSRN unstructured-data study carries no assertion here."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's table lists only Kim, Muhn, Nikolaev (2024), arXiv:2407.17866 as withdrawn, with no reference to the 2023 SSRN paper."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Muhn, Kim, Nikolaev, SSRN (2023) [working paper]"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that GPT-4 text features from MD&A predict returns, and no agreed_correction entry concerns this 2023 working paper."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block cites Kim, Muhn and Nikolaev only through arXiv:2407.17866, so the 2023 SSRN unstructured-data paper is absent."
        }
      ]
    },
    {
      "id": "M027",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "recorded as corrected",
          "matched_entry_ids": ["1.4", "3.2"],
          "answer_quotes": ["GPT-4-with-context ≈ 79–86% on document QA"],
          "ledger_quotes": [
            {
              "entry_id": "1.4",
              "line": 16,
              "quote": "the \"≈ 79–86%\" FinanceBench figure"
            },
            {
              "entry_id": "3.2",
              "line": 122,
              "quote": "GPT-4-Turbo used with a retrieval system incorrectly answered or refused to answer 81% of questions."
            }
          ],
          "reason": "The block's FinanceBench performance figure of roughly 79–86% is the quoted item in entry 1.4 and is corrected by the verified abstract wording recorded in entry 3.2."
        }
      ]
    },
    {
      "id": "M028",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's herding argument cites deHaan et al. only, with no Kleinberg and Raghavan assertion present."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Kleinberg and Raghavan are not cited anywhere in this block, so no assertion about the source exists to match."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block raises herding and common-error risk without citing Kleinberg and Raghavan, so the source carries no assertion here."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Kleinberg & Raghavan, ACM EC 2021"],
          "ledger_quotes": [],
          "reason": "The asserted detail is a monoculture claim of correlated errors attributed to an ACM EC 2021 paper, and no agreed_correction entry concerns that citation or venue."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block mentions correlated errors from widespread model use without any citation to Kleinberg and Raghavan."
        }
      ]
    },
    {
      "id": "M029",
      "blocks": [
        {
          "answer_block": "ANS-A-2",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Graham, Harvey, & Rajgopal (2005) show that CEOs fail to adapt not because of ignorance, but because of voluntary trade-offs: 78% of executives surveyed admitted they would knowingly destroy economic value"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the 78 per cent survey figure for executives who would destroy value to hit targets, and no agreed_correction entry concerns this survey."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Graham, Harvey & Rajgopal 2005, JAE 40 — ~4 in 5 executives would sacrifice value to hit targets"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the roughly four-in-five figure with the JAE volume, and no agreed_correction entry records a correction against this citation or figure."
        }
      ]
    },
    {
      "id": "M030",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Wirecard - Financial Times reporting 2019 before management admission"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that FT reporting in 2019 preceded management admission, and no agreed_correction entry addresses the FT/Wirecard timing."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Neither Wirecard nor the FT reporting appears in this block, whose short-seller examples are Hindenburg, Muddy Waters and Ljungqvist and Qian."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Wirecard (FT/short-sellers 2015–2020)"],
          "ledger_quotes": [],
          "reason": "The asserted detail is a 2015–2020 span for FT and short-seller detection at Wirecard, and no agreed_correction entry records a correction against that span."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["FT/McCrum (2019); Munich criminal proceedings (2021– )"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that McCrum's 2019 FT reporting beat auditor and regulator, and no agreed_correction entry concerns that assertion."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["In the most famous external-detection cases—Enron, Wirecard—the central factual findings typically involve insiders and executives having private knowledge"],
          "ledger_quotes": [],
          "reason": "The block asserts that Wirecard was a private-knowledge and concealment case rather than an outsider-exposure case, without citing the FT reporting, and no agreed_correction entry addresses that characterisation."
        }
      ]
    },
    {
      "id": "M031",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Federal Reserve, Review of Supervision of SVB, 2023-04-28 https://www.federalreserve.gov/publications/files/svb-review-20230428.pdf"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the dated review URL and its finding that rate risk was recognised but mis-weighted, and no agreed_correction entry concerns the Barr review."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block makes no reference to SVB or the Federal Reserve supervisory review, so no assertion about this source exists."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "SVB and the Barr review are absent from this block's evidence, so there is no assertion to match."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Barr Review (28 Apr 2023), federalreserve.gov/publications/files/svb-review-20230428.pdf [primary]"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the dated Barr review URL supporting a claim that risk was flagged in 2021–22 and visible in filings, and no agreed_correction entry addresses it."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block does not cite SVB or the Federal Reserve review, so the source carries no assertion here."
        }
      ]
    },
    {
      "id": "M032",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Dziri et al., NeurIPS 2023, arXiv:2305.18654"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that this identifier supports a compositional and arithmetic reasoning failure finding, and no agreed_correction entry concerns arXiv:2305.18654."
        }
      ]
    },
    {
      "id": "M033",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The identifier arXiv:2306.04920 does not appear in this block, whose BloombergGPT citation carries arXiv:2303.17564."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Neither arXiv:2306.04920 nor any BloombergGPT citation appears in this block, so there is no assertion to match."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's BloombergGPT row carries arXiv:2303.17564, so the identifier 2306.04920 is absent from it."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block contains no BloombergGPT citation and no occurrence of arXiv:2306.04920."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block cites BloombergGPT without an identifier, so arXiv:2306.04920 is absent and no assertion about it exists."
        }
      ]
    },
    {
      "id": "M034",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Carreyrou, WSJ (Oct 2015); US v. Holmes (verdict 3 Jan 2022) [case]"],
          "ledger_quotes": [],
          "reason": "The asserted detail dates the WSJ Theranos reporting to October 2015 and treats it as a journalist beating insiders and auditors, and no agreed_correction entry addresses that article."
        }
      ]
    },
    {
      "id": "M035",
      "blocks": [
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block makes no assertion about Markus Braun or a conviction outcome; its Wirecard row refers only to McCrum's FT reporting and ongoing Munich proceedings."
        }
      ]
    },
    {
      "id": "M036",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Malmendier and Tate are not cited in this block, so no assertion about the source exists to match."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's executive-bias evidence is Morrison and Milliken and Tushman and O'Reilly, with no Malmendier and Tate assertion present."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Malmendier and Tate do not appear anywhere in this block's text or evidence table."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's overconfidence evidence is Hribar and Yang and Schrand and Zechman, not Malmendier and Tate, so the source is absent."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Malmendier and Tate (2005) identify overconfident CEOs through option-exercise behavior and link them to distorted investment decisions."],
          "ledger_quotes": [],
          "reason": "The asserted detail is the option-exercise identification of overconfident CEOs linked to distorted investment, and no agreed_correction entry concerns this paper."
        }
      ]
    },
    {
      "id": "M037",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Hutton et al. (2012) show management forecasts, conditional on issuance, are more accurate than consensus analyst forecasts"],
          "ledger_quotes": [],
          "reason": "This block's Hutton assertion carries no author, issue or DOI variant, and entry 3.4 enumerates the corrected file variants as answer B's authors, answer E's issue number and the planning-text DOI guesses, none of which is this line."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": true,
          "ledger_correction": "recorded as corrected",
          "matched_entry_ids": ["1.8", "3.4"],
          "answer_quotes": ["(Hutton, Lee, & Matsumoto, 2012)"],
          "ledger_quotes": [
            {
              "entry_id": "1.8",
              "line": 28,
              "quote": "Citation \"Hutton, Lee, & Matsumoto, 2012\" supporting \"management forecasts systematically dominate analyst forecasts\""
            },
            {
              "entry_id": "3.4",
              "line": 133,
              "quote": "the file variants it corrects are at Source A lines 165/175 (authors)"
            }
          ],
          "reason": "The asserted third author \"Matsumoto\" is the variant quoted in entry 1.8 and corrected by the verified author list in entry 3.4."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Hutton, Lee and Shu are not cited in this block, so no assertion about the source exists to match."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's management-versus-analyst accuracy evidence is Imhoff and Pare with Kasznik, and Hutton, Lee and Shu are absent."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "recorded as corrected",
          "matched_entry_ids": ["1.9", "3.4", "6.9"],
          "answer_quotes": ["Hutton, Lee & Shu (2012), Journal of Accounting Research 50(2). Link"],
          "ledger_quotes": [
            {
              "entry_id": "1.9",
              "line": 32,
              "quote": "Source A, completed answer E, table line 1379 (wrong issue number)"
            },
            {
              "entry_id": "3.4",
              "line": 133,
              "quote": "the file variants it corrects are at Source A lines 165/175 (authors), 1379 (issue)"
            },
            {
              "entry_id": "6.9",
              "line": 172,
              "quote": "noting the wrong issue number in the same answer's table"
            }
          ],
          "reason": "The asserted issue number 50(2) in this block's table is the variant recorded in entries 1.9 and 6.9 and corrected to 50(5) by the verified record in entry 3.4."
        }
      ]
    },
    {
      "id": "M038",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Kothari, Shu and Wysocki are not cited in this block, whose disclosure-strategy evidence is Verrecchia and Healy and Palepu."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Legal discovery in securities litigation (Skinner, 1997; Kothari, Shu, & Wysocki, 2009)"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that this work supports delayed bad-news disclosure evidenced in litigation discovery, and no agreed_correction entry concerns the Kothari citation."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block does not cite Kothari, Shu and Wysocki anywhere, so no assertion about the source exists."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Kothari, Shu and Wysocki are absent from this block's text and evidence table, so there is no assertion to match."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Kothari, Shu, and Wysocki (2009) find managers delay disclosure of bad news relative to good news"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the delayed bad-news finding cited with Journal of Accounting Research 47(1), and no agreed_correction entry records a correction against it."
        }
      ]
    },
    {
      "id": "M039",
      "blocks": [
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Cohen, Malloy, and Pomorski (2012) show insiders earn abnormal returns from their trades, especially opportunistic trades"],
          "ledger_quotes": [],
          "reason": "The asserted detail is the opportunistic-trade abnormal return finding cited with Journal of Finance 67(3), and no agreed_correction entry concerns this paper."
        }
      ]
    },
    {
      "id": "M040",
      "blocks": [
        {
          "answer_block": "ANS-A-1",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Karpoff and Lou are not cited in this block, so no assertion about the source exists to match."
        },
        {
          "answer_block": "ANS-A-2",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's short-seller evidence is Ljungqvist and Qian, with no Karpoff and Lou assertion present."
        },
        {
          "answer_block": "ANS-A-3",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "Karpoff and Lou do not appear in this block's text or evidence table."
        },
        {
          "answer_block": "ANS-A-4",
          "source_present": false,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": [],
          "ledger_quotes": [],
          "reason": "The block's insider and misconduct evidence is Jeng, Metrick and Zeckhauser and the fraud case studies, so Karpoff and Lou are absent."
        },
        {
          "answer_block": "ANS-A-5",
          "source_present": true,
          "ledger_correction": "no ledger entry",
          "matched_entry_ids": [],
          "answer_quotes": ["Karpoff and Lou (2010) find abnormal short interest appears months before SEC enforcement actions are revealed"],
          "ledger_quotes": [],
          "reason": "The asserted detail is that abnormal short interest precedes SEC enforcement by months, and no agreed_correction entry concerns this paper."
        }
      ]
    }
  ]
}
```