{
  "statement": "Parallelogram ABCD with diagonals AC and BD intersecting at O.",
  "points": [
    {"name": "A", "hint": [0, 0]},
    {"name": "B", "hint": [2, 0]},
    {"name": "C", "hint": [2.5, 1]},
    {"name": "D", "hint": [0.5, 1]},
    {"name": "O", "hint": [1.25, 0.5]}
  ],
  "segments": [
    {"a": "A", "b": "B", "draw": true},
    {"a": "B", "b": "C", "draw": true},
    {"a": "C", "b": "D", "draw": true},
    {"a": "D", "b": "A", "draw": true},
    {"a": "A", "b": "C", "draw": true},
    {"a": "B", "b": "D", "draw": true}
  ],
  "lines": [],
  "circles": [],
  "angle_marks": [],
  "labels": [],
  "constraints": [
    {"type": "parallel", "a1": "A", "a2": "B", "b1": "D", "b2": "C"},
    {"type": "parallel", "a1": "A", "a2": "D", "b1": "B", "b2": "C"},
    {"type": "midpoint", "point": "O", "a": "A", "b": "C"},
    {"type": "midpoint", "point": "O", "a": "B", "b": "D"},
    {"type": "length", "a": "A", "b": "B", "value": 2.0},
    {"type": "length", "a": "A", "b": "D", "value": 1.2}
  ],
  "expected_mode": "exact"
}