{
  "set_id": "synthetic-controls",
  "bundle": "positive",
  "note": "Row 4's denominator: the five negative control classes measured 2026-09-17, plus one control the bundle DOES answer. A marking that also fires on a covered question says nothing, so both directions are in the same row.",
  "questions": [],
  "controls": [
    {"id": "N1", "kind": "an unrelated topic", "question": "Hvilken safran passer til fiskesuppe?"},
    {"id": "N2", "kind": "a foreign language", "question": "How do I rotate the database credentials?"},
    {"id": "N3", "kind": "a plausible term the bundle does not cover", "question": "Hvilken kontroll gjelder for broeytebilen om vinteren?"},
    {"id": "N4", "kind": "a lookup on an identifier that does not exist", "question": "Hva sier punkt 99.9 i haandboka?"},
    {"id": "N5", "kind": "the set's own known-negative", "question": "Hva koster et doegn paa hytta for gjester?"},
    {"id": "P0", "kind": "covered by the bundle", "question": "Naar kontrolleres vinterberedskapen?", "covered": true}
  ]
}