{
 "interior_layout_exposed": false,
 "legend_entries": [
  "A ROOFTOP ROOM",
  "B IRON DOOR",
  "C EXTERIOR WINDOWS",
  "D INNER DOORWAYS",
  "E ROOFTOP TERRACE",
  "F LOW WALL",
  "G ROOF FIXTURES",
  "H EXTERIOR STAIR",
  "I ALLEY APPROACH",
  "J NEIGHBOR ROOFS"
 ],
 "letters_found": [
  "A",
  "B",
  "C",
  "D",
  "E",
  "F",
  "G",
  "H",
  "I",
  "J"
 ],
 "notes": "Circled capital letters visible on the sketch include A through J. The view is top-down of rooftops/terrace areas; no interior room layout is exposed."
}