{
  "title": "Investment banking filing amendments for AI review",
  "source_page": "https://fiund.com/industries/investment-bank-filing-amendment-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A scoped amendment changes one section while preserving the earlier memo's information set",
    "context": "An imaginary issuer has an original offering-description fixture. None of the text comes from a real filing, transaction or confidential research document.",
    "records": [
      [
        "FA1",
        "Original packet F1",
        "Issuer I-A, published day 2. Section USE says purpose X; section CONTACT names desk D."
      ],
      [
        "FA2",
        "Amendment F1A",
        "Published day 8 for I-A. Explicitly replaces section USE with purpose Y; states section CONTACT unchanged."
      ],
      [
        "FA3",
        "Memo and unrelated packet",
        "Memo M dated day 5 cites F1. Issuer I-B has another amendment with a similar title but no I-A link."
      ]
    ],
    "question": "What USE description was available to M, and which sections support a day-9 summary of I-A?",
    "answer": "FA3 dates M before FA2's publication, so FA1's purpose X was the supplied description available on day 5. For day 9, FA2 replaces USE with Y while explicitly leaving CONTACT unchanged; cite the amendment for USE and F1 for desk D. The I-B amendment belongs to another issuer. Preserve both the historical information set and the amendment's limited scope rather than treating every earlier section as replaced.",
    "failureModes": [
      "Citing an amendment that had not been published at the memo's date.",
      "Discarding unaffected sections or mixing amendments from similarly titled issuer packets."
    ],
    "fields": [
      [
        "Issuer and document identity",
        "Prevents cross-issuer source joins."
      ],
      [
        "Publication date and as-of cutoff",
        "Defines availability."
      ],
      [
        "Amended section and preserved section",
        "Makes supersession scope explicit."
      ]
    ],
    "holdout": "Add a day-10 amendment changing CONTACT only. Require USE to remain Y, with a separate source for the new contact.",
    "boundary": "Use independently written practice materials. Exclude nonpublic transactions, client work, insider information and licensed research; no investment recommendation is made."
  }
}