Triple

T2148338
Position Surface form Disambiguated ID Type / Status
Subject Columbia Junction E47120 entity
Predicate locatedInRailNetwork P24517 FINISHED
Object Boston elevated and rapid transit system E85612 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: Boston elevated and rapid transit system | Statement: [Columbia Junction, locatedInRailNetwork, Boston elevated and rapid transit system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Boston elevated and rapid transit system
Context triple: [Columbia Junction, locatedInRailNetwork, Boston elevated and rapid transit system]
  • A. Boston subway
    The Boston subway, officially known as the MBTA or "the T," is one of the oldest public transit systems in the United States, serving the Greater Boston area with an extensive network of underground and surface rail lines.
  • B. Metropolitan Transit System
    The Metropolitan Transit System is the primary public transportation agency serving the San Diego region, operating buses, trolleys, and related transit services.
  • C. Boston Elevated Railway chosen
    The Boston Elevated Railway was a former public transit company that operated Boston’s early elevated and streetcar lines before being succeeded by the modern MBTA system known as “the T.”
  • D. 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.
  • E. Metrorail
    Metrorail is the rapid transit system serving the Washington, D.C. metropolitan area, operated by the Washington Metropolitan Area Transit Authority (WMATA).
  • 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: locatedInRailNetwork
Context triple: [Columbia Junction, locatedInRailNetwork, Boston elevated and rapid transit system]
  • A. usesRailInfrastructureOf
    Indicates that one entity operates on, accesses, or otherwise makes use of the rail infrastructure owned or managed by another entity.
  • B. hasRailStation
    Indicates that one entity possesses, contains, or is served by a rail station.
  • C. hasRailSystem
    Indicates that an entity possesses or is served by a rail-based transportation system.
  • D. railroadNetwork chosen
    Indicates a relationship where locations are connected as part of the same system of railway lines and infrastructure used for train transport.
  • E. hasRackRailway
    Indicates that one entity possesses or includes a rack railway system connecting locations or operating within its area.
  • 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_69a88a1933e0819094f18426ed74180f completed March 4, 2026, 7:38 p.m.
NER Named-entity recognition batch_69abbeaa14bc81908486683decd7ae42 completed March 7, 2026, 5:59 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae58d9c52081909f6acb0558369310 completed March 9, 2026, 5:21 a.m.
PD Predicate disambiguation batch_69abbd9846e88190b6c2941dd9ce7749 completed March 7, 2026, 5:54 a.m.
Created at: March 4, 2026, 7:44 p.m.