Triple
T639101
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mattapan Trolley |
E16691
|
entity |
| Predicate | neighborhoodServed |
P82
|
FINISHED |
| Object |
Mattapan
Mattapan is a residential neighborhood in Boston, Massachusetts, known for its diverse community and location in the city's southern section.
|
E104962
|
NE FINISHED |
How this triple was built (5 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 | Statement: [Mattapan Trolley, neighborhoodServed, Mattapan]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mattapan Context triple: [Mattapan Trolley, neighborhoodServed, Mattapan]
-
A.
Cotuit
Cotuit is a seaside village on Cape Cod in the town of Barnstable, Massachusetts, known for its historic character and shellfishing heritage.
-
B.
Swampscott
Swampscott is a coastal town in northeastern Massachusetts known for its residential character and seaside location north of Boston.
-
C.
Watertown, Massachusetts
Watertown, Massachusetts is a historic suburban city just west of Boston, known for its early industrial development and significant Armenian-American community.
-
D.
Hudson, Massachusetts
Hudson, Massachusetts is a small New England town known for its historic downtown, revitalized mill buildings, and location along the Assabet River in central Massachusetts.
-
E.
Hyannis
Hyannis is a major village and commercial hub in the town of Barnstable on Cape Cod, Massachusetts, known for its busy harbor, beaches, and ferry connections to the islands of Martha’s Vineyard and Nantucket.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Mattapan Triple: [Mattapan Trolley, neighborhoodServed, Mattapan]
Generated description
Mattapan is a residential neighborhood in Boston, Massachusetts, known for its diverse community and location in the city's southern section.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mattapan Target entity description: Mattapan is a residential neighborhood in Boston, Massachusetts, known for its diverse community and location in the city's southern section.
-
A.
Cotuit
Cotuit is a seaside village on Cape Cod in the town of Barnstable, Massachusetts, known for its historic character and shellfishing heritage.
-
B.
Swampscott
Swampscott is a coastal town in northeastern Massachusetts known for its residential character and seaside location north of Boston.
-
C.
Watertown, Massachusetts
Watertown, Massachusetts is a historic suburban city just west of Boston, known for its early industrial development and significant Armenian-American community.
-
D.
Hudson, Massachusetts
Hudson, Massachusetts is a small New England town known for its historic downtown, revitalized mill buildings, and location along the Assabet River in central Massachusetts.
-
E.
Hyannis
Hyannis is a major village and commercial hub in the town of Barnstable on Cape Cod, Massachusetts, known for its busy harbor, beaches, and ferry connections to the islands of Martha’s Vineyard and Nantucket.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: neighborhoodServed Context triple: [Mattapan Trolley, neighborhoodServed, Mattapan]
-
A.
areaServed
chosen
Indicates the geographic region or jurisdiction within which a service, organization, or activity is provided or applicable.
-
B.
hasNeighbourhood
Indicates that one entity is located within, or is associated with, a particular neighborhood area of another entity.
-
C.
sectorServed
Indicates the industry or economic sector that an entity primarily serves or targets with its activities, products, or services.
-
D.
neighborhood
Indicates that one entity is located in close spatial proximity to another, typically within the same local area or district.
-
E.
hasNearbyCommunity
Indicates that one entity has another community located close to it in geographic or spatial terms.
- F. None of above.
Provenance (6 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_69a4936be1c88190af56540324b57da7 |
completed | March 1, 2026, 7:28 p.m. |
| NER | Named-entity recognition | batch_69a4a17b125481909a6ab53424954792 |
completed | March 1, 2026, 8:28 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a7c0036a5081909d5b3a81a9ef3daf |
completed | March 4, 2026, 5:15 a.m. |
| NEDg | Description generation | batch_69a7c0716e708190b907502b17b671f8 |
completed | March 4, 2026, 5:17 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a7c0d166ac819089b683e7cee92043 |
completed | March 4, 2026, 5:19 a.m. |
| PD | Predicate disambiguation | batch_69a49d0629308190bcc137639567f7c2 |
completed | March 1, 2026, 8:09 p.m. |
Created at: March 1, 2026, 7:35 p.m.