Triple

T6255117
Position Surface form Disambiguated ID Type / Status
Subject Mattapan Line E140142 entity
Predicate isShuttleFor P3493 FINISHED
Object Ashmont–Mattapan corridor E71486 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: Ashmont–Mattapan corridor | Statement: [Mattapan Line, isShuttleFor, Ashmont–Mattapan corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Ashmont–Mattapan corridor
Context triple: [Mattapan Line, isShuttleFor, Ashmont–Mattapan corridor]
  • A. South Boston Transitway
    The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
  • B. Brookline Avenue
    Brookline Avenue is a major street in Boston, Massachusetts, running through the Fenway–Kenmore area and providing access to landmarks like Fenway Park and the Longwood Medical Area.
  • C. Mill Plain Boulevard corridor
    The Mill Plain Boulevard corridor is a major east–west arterial route in Vancouver, Washington, serving as a key commercial and transit spine through the city.
  • D. MBTA Ashmont Branch chosen
    The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
  • E. Rhode Island Avenue NE corridor
    The Rhode Island Avenue NE corridor is a major commercial and transportation artery in Northeast Washington, D.C., lined with shops, services, and residential neighborhoods and served by multiple transit options.
  • 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_69c008b4858c819095b0199114a9a87b completed March 22, 2026, 3:20 p.m.
NER Named-entity recognition batch_69c06363d6008190bf05e003b1f74497 completed March 22, 2026, 9:47 p.m.
NED1 Entity disambiguation (via context triple) batch_69c519246a588190b14ad9331e1a5eea completed March 26, 2026, 11:31 a.m.
Created at: March 22, 2026, 4:24 p.m.