Triple

T7565433
Position Surface form Disambiguated ID Type / Status
Subject Fitchburg Line E178900 entity
Predicate owner P347 FINISHED
Object Massachusetts Bay Transportation Authority E2866 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: Massachusetts Bay Transportation Authority | Statement: [Fitchburg Line, owner, Massachusetts Bay Transportation Authority]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Massachusetts Bay Transportation Authority
Context triple: [Fitchburg Line, owner, Massachusetts Bay Transportation Authority]
  • A. MBTA chosen
    The MBTA (Massachusetts Bay Transportation Authority) is the public transit agency that operates subway, bus, commuter rail, and ferry services in the Greater Boston area.
  • B. MBTA
    MBTA is a landmark U.S. federal law enacted in 1918 that protects migratory bird species by prohibiting their unauthorized capture, killing, or trade.
  • C. Massachusetts Bay Transportation Trust Fund
    The Massachusetts Bay Transportation Trust Fund is a dedicated financial resource used to support and sustain public transportation services in Massachusetts.
  • D. MetroWest Regional Transit Authority
    MetroWest Regional Transit Authority is a public transportation agency that operates local bus and paratransit services in the MetroWest region of Massachusetts.
  • E. Cape Cod Regional Transit Authority
    The Cape Cod Regional Transit Authority is a public transportation agency that operates bus and paratransit services throughout Cape Cod, Massachusetts.
  • 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_69c69f2f80288190b95cceb4da92ab2b completed March 27, 2026, 3:15 p.m.
NER Named-entity recognition batch_69c6f8fde87c81909795fc713d7378ff completed March 27, 2026, 9:39 p.m.
NED1 Entity disambiguation (via context triple) batch_69c856dc5ea881908c2e0075f9631af4 completed March 28, 2026, 10:31 p.m.
Created at: March 27, 2026, 3:50 p.m.