{
  "question": "According to four-dimensional geometry, the angles of a triangle add to 180°",
  "options": {
    "A": "always.",
    "B": "sometimes.",
    "C": "never.",
    "D": "on planet Earth only."
  },
  "answer": "B",
  "topk_tokens": [
    "four-dimensional_geometry",
    "triangle_angle_sum",
    "geometric_spaces"
  ],
  "uncertainties": [
    null,
    null,
    null
  ],
  "raw_output": "{\"concepts\": [\"four-dimensional_geometry\", \"triangle_angle_sum\", \"geometric_spaces\"]}"
}