{
  "title": "Pulp mill data for AI handsheet and sample matching",
  "source_page": "https://fiund.com/industries/pulp-handsheet-sample-lineage-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A handsheet from a mixed sample",
    "context": "Paper cards represent fictional pulp bales and a composite sample. The exercise tracks source contribution rather than pulp processing.",
    "records": [
      [
        "P1",
        "Bale register",
        "Bale B1 from lot X; B2 from lot Y."
      ],
      [
        "P2",
        "Composite ticket",
        "C9 contains 6 g from B1 and 4 g from B2."
      ],
      [
        "P3",
        "Handsheets index",
        "H3 formed from C9; reported at handsheet level."
      ],
      [
        "P4",
        "Draft label",
        "H3 tagged as lot X only."
      ]
    ],
    "question": "Which lineage labels belong on H3?",
    "answer": "H3 traces through C9 to both lot X and lot Y using P1–P3. The composite input mass fractions were 60% and 40%; they describe the prepared sample, not two separately measured handsheet outcomes. Replace the X-only label in P4 with composite lineage.",
    "failureModes": [
      "Assigning an entire report to the majority input lot",
      "Treating input fractions as separately tested result fractions"
    ],
    "fields": [
      [
        "composite_id",
        "Connects handsheet to its preparation record"
      ],
      [
        "input_mass_fraction",
        "Quantifies each source on the stated input basis"
      ],
      [
        "outcome_grain",
        "Identifies a single composite measurement"
      ]
    ],
    "holdout": "Record amounts by wet mass with dry content missing; do not infer dry-fiber proportions.",
    "boundary": "No chemical conditions, actual supplier lots, proprietary blends or strength claims."
  }
}