{
  "id": "income-root",
  "question": "Why did King County’s dividend income lag?",
  "hint": "Descriptive answers, unresolved cause",
  "answer": "The reviewed records establish a historical dividend decline and describe migration and newer income context. They do not identify why the decline occurred.",
  "period": "Historical IRS comparisons: TY2022-TY2023; separate context through 2026 Q1",
  "limit": "No proven tax motive, migration explanation or policy effect. Broader measures cannot update the exact IRS dividend series.",
  "status": "unanswered",
  "children": [
    "income-historical-dividends",
    "income-migration",
    "income-newer-context"
  ],
  "related": [],
  "findings": [],
  "plots": [],
  "sources": [
    {
      "label": "IRS SOI County Data landing page",
      "url": "https://www.irs.gov/statistics/soi-tax-stats-county-data"
    }
  ],
  "record_url": "/research/washington-income/2026-09-21/nodes/income-root/index.html",
  "as_of_date": "2026-09-21",
  "methods": "",
  "lineage_ids": [
    "WA-M-012",
    "current"
  ],
  "publication_state": "prepared",
  "record_json_url": "/research/washington-income/2026-09-21/nodes/income-root/record.json"
}