Triple
T9087639
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mattapan Line (MBTA) |
E217798
|
entity |
| Predicate | serves |
P98
|
FINISHED |
| Object | Mattapan, Boston |
E104962
|
NE FINISHED |
How this triple was built (2 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Mattapan, Boston | Statement: [Mattapan Line (MBTA), serves, Mattapan, Boston]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mattapan, Boston Context triple: [Mattapan Line (MBTA), serves, Mattapan, Boston]
-
A.
Mattapan
chosen
Mattapan is a residential neighborhood in Boston, Massachusetts, known for its diverse community and location in the city's southern section.
-
B.
East Boston, Massachusetts
East Boston, Massachusetts is a waterfront neighborhood of Boston known for its diverse immigrant communities, residential streets, and proximity to Logan International Airport.
-
C.
North End, Boston
North End, Boston is the city's oldest residential neighborhood, famed for its historic sites like the Paul Revere House and its vibrant Italian-American culture, restaurants, and festivals.
-
D.
Malden, Massachusetts
Malden, Massachusetts is a suburban city just north of Boston known for its diverse population, historic neighborhoods, and mix of residential and commercial areas.
-
E.
Allston, Massachusetts
Allston, Massachusetts is a vibrant Boston neighborhood known for its large student population, diverse immigrant communities, and growing innovation and arts scene.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69ca83d8ab5881909d8fddae363b32b1 |
completed | March 30, 2026, 2:08 p.m. |
| NER | Named-entity recognition | batch_69cc965646408190b041ab0e2d5dbc94 |
completed | April 1, 2026, 3:51 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d09b66432081908f557fba2cbf2f6d |
completed | April 4, 2026, 5:02 a.m. |
Created at: March 30, 2026, 7:13 p.m.