How large is Mattapan?
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 Mattapan as covering 1352 acres, as bounded by the Boston Planning Department. urn:lemay:boston:entity:mattapan
That is the official layer: the boundary an authority drew. What people call this place, and where they say it reaches, are filed separately as attested claims. urn:lemay:boston:entity:mattapan
The records this answer rests on
- Mattapan — entityurn:lemay:boston:entity:mattapan
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
- 0.334
- Composition packet digest
- 9dc1af41da272d1b424538a74a425f7e2f07cee9922f24876980043673d00ad4
- 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.