{
  "v": 1,
  "requestId": "9530306f-ef7a-471b-b04d-d59860868772",
  "chainId": 1,
  "window": { "toBlock": 26057781, "fromBlock": 26057484, "toBlockHash": "0x005a3816d93c0e6245887f65f1499615b6fa825f8d07d1f1081d8c1c0eb7ea8a" },
  "answerType": "uint256",
  "answer": "1954",
  "definitions": {
    "answer": "the four-digit calendar year, as a number",
    "source": "Britannica (\"Roger Bannister\" article) and Olympics.com both state Bannister ran the mile in 3:59.4 on 6 May 1954 at Iffley Road, Oxford, becoming the first person to run a mile in under four minutes.",
    "missing": "not applicable; the fact was established from the sources above",
    "subject": "This is a documented sports-history fact, independent of the pinned chain/block window, which only timestamps the request."
  },
  "recipe": { "kind": "panel", "source": "Britannica: https://www.britannica.com/biography/Roger-Bannister; Olympics.com athlete profile of Roger Bannister" },
  "notes": "Roger Bannister broke the four-minute mile barrier on 6 May 1954, running 3:59.4 at the Iffley Road track in Oxford, England. This is confirmed by Encyclopaedia Britannica and Olympics.com. Answer type is uint256 per the definitions, so the year is reported as the decimal string \"1954\"."
}