{
 "interior_layout_exposed": false,
 "legend_entries": [
  "A VILLA FOOTPRINT",
  "B ARRIVAL ALLEY",
  "C STREET ENTRANCE",
  "D ENTRY YARD",
  "E REAR CORNER",
  "F EXTERIOR STAIRS",
  "G ROOF TERRACE",
  "H UPPER SHELL",
  "I IRON DOOR",
  "J ROOM WINDOWS",
  "K ROOF FIXTURES",
  "L NEIGHBOR BLOCKS"
 ],
 "letters_found": [
  "B",
  "C",
  "D",
  "E",
  "F",
  "G",
  "H",
  "I",
  "J",
  "K",
  "L"
 ],
 "notes": "Circled capital letters visible on the plan are B through L; A appears only in the legend. No interior room layout is exposed, only exterior/roof/site elements are shown."
}