Triple

T11786277
Position Surface form Disambiguated ID Type / Status
Subject Porter Square station E280277 entity
Predicate deepestStationOnLine P55575 FINISHED
Object MBTA Red Line E761 NE FINISHED

How this triple was built (3 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 | Statement: [Porter Square station, deepestStationOnLine, MBTA Red Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA Red Line
Context triple: [Porter Square station, deepestStationOnLine, MBTA Red Line]
  • A. 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.
  • B. MBTA Orange Line
    The MBTA Orange Line is a rapid transit line in the Boston metropolitan area that runs roughly north–south, connecting neighborhoods such as Jamaica Plain, Downtown Boston, and Malden.
  • C. MBTA Blue Line
    The MBTA Blue Line is a rapid transit line in the Boston metropolitan area that runs primarily along the city’s northeastern corridor, connecting downtown Boston with East Boston, Logan Airport, and Revere.
  • D. MBTA Green Line
    The MBTA Green Line is a light rail service in Boston, Massachusetts, known as one of the oldest subway lines in the United States and serving key neighborhoods, universities, and cultural destinations across the city.
  • E. MBTA Silver Line
    The MBTA Silver Line is a bus rapid transit service in Boston that operates in dedicated lanes and tunnels, linking key neighborhoods, Logan Airport, and South Station.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: deepestStationOnLine
Context triple: [Porter Square station, deepestStationOnLine, MBTA Red Line]
  • A. deepestStation chosen
    Indicates that one station in a network or system is located at a greater depth (e.g., below ground or sea level) than all other stations.
  • B. oneOfDeepestStationsIn
    Indicates that a station is among the deepest stations located within a specified area or system.
  • C. subwayLine
    Indicates that there is a subway line connection or service relationship between the referenced entities.
  • D. subwayStation
    Indicates that one entity is a subway station associated with, located in, or serving the other entity.
  • E. railLineTerminus
    Indicates that a rail line ends or terminates at the specified location or station.
  • F. None of above.

Provenance (4 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_69d6ab258b808190b1735835c841e3a4 completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d8a586803481909af0032c35ca6e51 completed April 10, 2026, 7:23 a.m.
NED1 Entity disambiguation (via context triple) batch_69f417604a7c819097a601880b88ea6a completed May 1, 2026, 3 a.m.
PD Predicate disambiguation batch_69d8a2491f048190853239bc05090bf4 completed April 10, 2026, 7:10 a.m.
Created at: April 8, 2026, 9:42 p.m.