Triple

T3508
Position Surface form Disambiguated ID Type / Status
Subject MBTA Fitchburg Line E65 entity
Predicate connectsWith P37 FINISHED
Object MBTA Red Line at Porter 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 at Porter | Statement: [MBTA Fitchburg Line, connectsWith, MBTA Red Line at Porter]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA Red Line at Porter
Context triple: [MBTA Fitchburg Line, connectsWith, MBTA Red Line at Porter]
  • 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 Fitchburg Line
    The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
  • C. MBTA
    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.
  • D. MBTA Green Line D branch (nearby stations)
    The MBTA Green Line D branch is a light rail line in Greater Boston that runs between downtown Boston and several western suburbs, including Newton, providing frequent local transit service.
  • E. MBTA bus network
    The MBTA bus network is the system of public bus routes serving Cambridge and the greater Boston area as part of the Massachusetts Bay Transportation Authority’s regional transit services.
  • 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: connectsWith
Context triple: [MBTA Fitchburg Line, connectsWith, MBTA Red Line at Porter]
  • A. allows
    Indicates that one entity grants permission, capability, or opportunity for another entity to perform an action or be in a certain state.
  • B. complements
    Indicates that one entity enhances, completes, or improves another by providing qualities or functions that fit well together.
  • C. memberOf
    Indicates that an entity belongs to, is part of, or is a constituent of a larger group, organization, or collection.
  • D. follows
    Indicates that one entity comes after, moves behind, or acts in accordance with another entity in time, space, or sequence.
  • E. relatedTo chosen
    Indicates a general, non-specific relationship or association exists between two entities.
  • 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_69a238d6b47881909e68288aed2fd858 completed Feb. 28, 2026, 12:37 a.m.
NER Named-entity recognition batch_69a23bcc8eb48190b897cc331563980a completed Feb. 28, 2026, 12:50 a.m.
NED1 Entity disambiguation (via context triple) batch_69a29172b5b4819080efd4fe0d9658c6 completed Feb. 28, 2026, 6:55 a.m.
PD Predicate disambiguation batch_69a23994309081909ff3e869deef2156 completed Feb. 28, 2026, 12:40 a.m.
Created at: Feb. 28, 2026, 12:40 a.m.