Triple

T23095682
Position Surface form Disambiguated ID Type / Status
Subject MBTA commuter rail at Back Bay E575880 entity
Predicate railLine P848 FINISHED
Object Providence/Stoughton Line — NE NERFINISHED

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: Providence/Stoughton Line | Statement: [MBTA commuter rail at Back Bay, railLine, Providence/Stoughton Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Providence/Stoughton Line
Context triple: [MBTA commuter rail at Back Bay, railLine, Providence/Stoughton Line]
  • A. Providence/Stoughton Line chosen
    The Providence/Stoughton Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston with Providence, Rhode Island and Stoughton, Massachusetts.
  • B. Fitchburg Line
    The Fitchburg Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority (MBTA) that runs between Boston and the city of Fitchburg in Massachusetts.
  • C. Boston–Portland main line
    The Boston–Portland main line is a historic New England railroad corridor connecting Boston, Massachusetts, with Portland, Maine, that has long served as a key passenger and freight route along the region’s coast.
  • D. Reading–Taunton line
    The Reading–Taunton line is a major railway route in southern England that connects Reading in Berkshire with Taunton in Somerset, serving numerous towns across the Thames Valley and West Country.
  • E. New Haven–Springfield Line
    The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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_69e245c060b48190a9bd61a47a16db17 completed April 17, 2026, 2:37 p.m.
NER Named-entity recognition batch_69f18de3b2b481909ef598b447ed4dd2 completed April 29, 2026, 4:49 a.m.
Created at: April 17, 2026, 3:57 p.m.