{
  "question": "When an element ejects an alpha particle, the atomic number of the resulting element",
  "options": {
    "A": "reduces by 2",
    "B": "reduces by 4",
    "C": "increases by 2",
    "D": "increases by 4"
  },
  "answer": "A",
  "topk_tokens": [
    "alpha decay",
    "atomic number",
    "nuclear reaction"
  ],
  "uncertainties": [
    null,
    null,
    null
  ],
  "raw_output": "{\"concepts\": [\"alpha decay\", \"atomic number\", \"nuclear reaction\"]}"
}