{
  "question_id": 1177,
  "hints": [
    {"hint_level": 1, "hint": "To compare heights, subtract the shorter from the taller."},
    {"hint_level": 2, "hint": "Sam is 64 inches, Liz is 43 inches. Who is taller? By how much?"},
    {"hint_level": 3, "hint": "64 - 43 = ?"}
  ]
}