Who drew the boundary of Back Bay?
This answer was composed from the records listed beneath it, and from nothing else. Every statement carries the identifier of the record that supports it; every identifier was verified against the retrieved set before this page existed; and the records are named so the answer can be checked against them.
The archive records Back Bay as an official neighborhood of Boston, as bounded by the Boston Planning Department. urn:lemay:boston:entity:back-bay
That is the official layer — the boundary an authority drew — and on it Back Bay covers 399 acres. What people call this place, and where they say it reaches, are filed separately as attested claims. urn:lemay:boston:entity:back-bay
The records this answer rests on
- Back Bay — entityurn:lemay:boston:entity:back-bay
How this page was made
- Question derived from
- Neighbourhood and place boundaries
- Composed by
- claude-opus-5 (composed in the operator's pane, unarmed engine)
- Records composed over
- 8
- Nearest record, cosine distance
- 0.300
- Composition packet digest
- 9254ea6d0469b3377ec6ff6dde3d301821973fda5dd937aee31f15fa7b0dcb98
- Verification
- Passed the citation, grounding and grey-record checks against the packet, then survived an independent adversarial review that saw only the packet and this answer.