{
  "sample_type": "synthetic_format_example",
  "notice": "Synthetic construction documents. This is a mapping example, not a real bid instruction.",
  "offer": "Bid Addenda Desk",
  "columns": [
    "Change and citation",
    "Checklist item",
    "Estimator review"
  ],
  "rows": [
    {
      "Change and citation": "DEMO addendum 02 / p3: replace specified fixture",
      "Checklist item": "E-12 lighting fixture allowance",
      "Estimator review": "Check vendor selection and price"
    },
    {
      "Change and citation": "DEMO addendum 02 / p5: add test report",
      "Checklist item": "E-21 commissioning deliverables",
      "Estimator review": "Confirm responsibility and allowance"
    },
    {
      "Change and citation": "DEMO addendum 02 / p6: revised schedule reference",
      "Checklist item": "E-30 project schedule",
      "Estimator review": "Referenced revision not supplied"
    }
  ],
  "coverage": "Illustrative rows only; actual pilot sources and scope agreed separately."
}