{
  "question": "Compared with the power input, the power output of an ideal transformer is",
  "options": {
    "A": "greater",
    "B": "less",
    "C": "the same",
    "D": "Any of these"
  },
  "answer": "C",
  "topk_tokens": [
    "Transformer Operation",
    "Power Conservation",
    "Ideal Transformer Assumptions"
  ],
  "uncertainties": [
    null,
    null,
    null
  ],
  "raw_output": "{\"concepts\": [\"Transformer Operation\", \"Power Conservation\", \"Ideal Transformer Assumptions\"]}"
}