Triple

T161752
Position Surface form Disambiguated ID Type / Status
Subject Boston’s North Station (via Fitchburg Line) E3301 entity
Predicate hasTracksFor P3284 FINISHED
Object Fitchburg Line trains E65 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: Fitchburg Line trains | Statement: [Boston’s North Station (via Fitchburg Line), hasTracksFor, Fitchburg Line trains]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Fitchburg Line trains
Context triple: [Boston’s North Station (via Fitchburg Line), hasTracksFor, Fitchburg Line trains]
  • A. MBTA Fitchburg Line chosen
    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.
  • B. Fitchburg Railroad
    The Fitchburg Railroad was a historic New England rail line that operated across Massachusetts and into Vermont, later becoming part of the Boston and Maine Railroad system.
  • 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 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.
  • E. MBTA Commuter Rail network
    The MBTA Commuter Rail network is a regional passenger rail system serving Greater Boston and surrounding communities in Massachusetts and parts of Rhode Island.
  • 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: hasTracksFor
Context triple: [Boston’s North Station (via Fitchburg Line), hasTracksFor, Fitchburg Line trains]
  • A. hasTrack chosen
    Indicates that one entity possesses, includes, or is associated with a specific track (such as a path, course, or recorded item).
  • B. numberOfTracks
    Indicates the quantity of tracks associated with a given entity.
  • C. tracks
    Indicates that one entity monitors, follows, or keeps a record of another entity’s state, behavior, or progress over time.
  • D. hasTrail
    Indicates that an entity possesses, includes, or is associated with a trail or pathway.
  • E. usesTrackOwnedBy
    Indicates that an entity makes use of a track (e.g., route, path, or rail line) that is owned by another specified entity.
  • 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_69a2527757ec819090b8becb2cf1a862 completed Feb. 28, 2026, 2:27 a.m.
NER Named-entity recognition batch_69a2585877648190a2ec320182a69343 completed Feb. 28, 2026, 2:52 a.m.
NED1 Entity disambiguation (via context triple) batch_69a467f8341081909e4fbdbe44a2e799 completed March 1, 2026, 4:23 p.m.
PD Predicate disambiguation batch_69a256623704819089d9eeefe05858ce completed Feb. 28, 2026, 2:43 a.m.
Created at: Feb. 28, 2026, 2:31 a.m.