{
  "title": "General-purpose machinery data for AI filter assembly evidence",
  "source_page": "https://fiund.com/industries/filter-assembly-cartridge-source-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A cartridge revision is visible after opening the mock cover",
    "context": "Two paper cartridges stand in for fictional components. There is no actual fluid or filter test.",
    "records": [
      [
        "1",
        "Assembly list",
        "Case C2 expected to contain cartridge K4 rev B."
      ],
      [
        "2",
        "Supply statement",
        "Document D covers K4 rev A only."
      ],
      [
        "3",
        "Open photo",
        "Cartridge stamp K4 rev B visible in C2."
      ]
    ],
    "question": "Can D be attached as evidence for the observed cartridge?",
    "answer": "The observed stamp agrees with the assembly list in records 1 and 3, but D in record 2 is scoped to rev A. Keep the identity match and evidence gap separate; sharing cartridge family K4 does not extend the source statement to rev B.",
    "failureModes": [
      "Accepting evidence on family match alone",
      "Equating cartridge identity with measured assembly performance"
    ],
    "fields": [
      [
        "cartridge_revision",
        "Distinguishes variant coverage"
      ],
      [
        "physical_stamp",
        "Supports observed identity"
      ],
      [
        "statement_scope",
        "Checks applicability of source evidence"
      ]
    ],
    "holdout": "Add a source statement explicitly covering rev B for one material option; verify option applicability too.",
    "boundary": "No actual filter specification, operating advice, treatment claims or source documents."
  }
}