{
 "schema_version": 3,
 "figure_id": "913ba16a635188097dbb235741e05e376d23cca17bdb1789aec79a1497a67ada",
 "title": "Labeled cross-section of the human heart",
 "figure_type": "labeled_diagram",
 "page": {
  "size": "letter",
  "width_mm": 215.9,
  "height_mm": 279.4
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 "summary": "The human heart has four chambers with major arteries and veins entering and leaving the top. Valves separate atria from ventricles and fibrous cords anchor the valve flaps.",
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   "earcon_hz": 659.25
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   "id": "grid",
   "meaning": "superior vena cava, right pulmonary arteries, inferior vena cava and left pulmonary arteries",
   "earcon_hz": 783.99
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   "id": "cross",
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   "earcon_hz": 880.0
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   "earcon_hz": 392.0
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   "source": "sam",
   "confidence": 0.84375,
   "verified_by_teacher": true,
   "touchable": true,
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   "texture": "grid",
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     "direction": "down"
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     "direction": "down"
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   "verified_by_teacher": true,
   "touchable": true,
   "parent": null
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