Triple

T15403810
Position Surface form Disambiguated ID Type / Status
Subject Green Line (MBTA) E368394 entity
Predicate hasSubwaySection P15152 FINISHED
Object Boylston Street subway E22719 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: Boylston Street subway | Statement: [Green Line (MBTA), hasSubwaySection, Boylston Street subway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Boylston Street subway
Context triple: [Green Line (MBTA), hasSubwaySection, Boylston Street subway]
  • A. Boylston Street, Boston chosen
    Boylston Street in Boston is a major downtown thoroughfare best known as the iconic finish-line location of the Boston Marathon.
  • B. Brattle Street
    Brattle Street is a historic thoroughfare in Cambridge, Massachusetts, known for its colonial-era houses, cultural landmarks, and proximity to Harvard University.
  • C. Tremont Street, Boston
    Tremont Street in Boston is a major historic thoroughfare running through downtown and bordering Boston Common, lined with notable civic, cultural, and commercial landmarks.
  • D. Park Street MBTA station
    Park Street MBTA station is a major downtown Boston subway hub on the MBTA’s Green and Red Lines, located at the eastern edge of Boston Common.
  • E. Tremont Street subway
    The Tremont Street subway is the historic underground streetcar tunnel in downtown Boston that forms part of the MBTA Green Line and is recognized as the oldest subway tunnel in North America.
  • 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_69d85a16c68c819099c1b547fbc87b32 completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e03e8fde64819082ec0c68df305561 completed April 16, 2026, 1:42 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff1a716248819094fd8b205cc2a3f2 completed May 9, 2026, 11:28 a.m.
Created at: April 10, 2026, 3:19 a.m.