{
  "question": "Immediately after two separated charged particles are released from rest, both increase in acceleration. The sign of charge of the particles is therefore",
  "options": {
    "A": "the same",
    "B": "opposite",
    "C": "Either of these",
    "D": "Need more information"
  },
  "answer": "B",
  "topk_tokens": [
    "Coulomb's Law",
    "Electric Force",
    "Like Charges Repel"
  ],
  "uncertainties": [
    null,
    null,
    null
  ],
  "raw_output": "{\"concepts\": [\"Coulomb's Law\", \"Electric Force\", \"Like Charges Repel\"]}"
}