Triple

T19711681
Position Surface form Disambiguated ID Type / Status
Subject Milton via Mattapan Line E473362 entity
Predicate integratedWith P2830 FINISHED
Object MBTA Red Line rapid transit at Ashmont 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: MBTA Red Line rapid transit at Ashmont | Statement: [Milton via Mattapan Line, integratedWith, MBTA Red Line rapid transit at Ashmont]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA Red Line rapid transit at Ashmont
Context triple: [Milton via Mattapan Line, integratedWith, MBTA Red Line rapid transit at Ashmont]
  • A. MBTA Ashmont Branch
    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.
  • B. MBTA Red Line at Central Square
    The MBTA Red Line at Central Square is a rapid transit station in Cambridge, Massachusetts, serving as a key subway stop connecting the Central Square neighborhood to Boston and the greater metro area.
  • C. MBTA Red Line chosen
    The MBTA Red Line is a major rapid transit line in the Boston metropolitan area that runs through key communities including Cambridge, connecting them to downtown Boston and other parts of the region.
  • D. Ashmont–Braintree branch of the Red Line
    The Ashmont–Braintree branch of the Red Line is a major rapid transit corridor of Boston’s MBTA system, running south from downtown Boston to the suburbs of Ashmont and Braintree.
  • E. MBTA Orange Line Back Bay branch
    The MBTA Orange Line Back Bay branch is the segment of Boston’s Orange Line rapid transit route that serves the Back Bay area and nearby stations such as Ruggles, providing key north–south subway service through the city.
  • 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_69d8e516dd048190a0b6c93ea3e71f58 completed April 10, 2026, 11:55 a.m.
NER Named-entity recognition batch_69e64408bde08190aa3bef8516491e03 completed April 20, 2026, 3:19 p.m.
Created at: April 10, 2026, 1:46 p.m.