Triple

T11034092
Position Surface form Disambiguated ID Type / Status
Subject Fern Rock–Olney express segment E260831 entity
Predicate usedBy P260 FINISHED
Object Broad Street Line express trains E384929 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Broad Street Line express trains | Statement: [Fern Rock–Olney express segment, usedBy, Broad Street Line express trains]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Broad Street Line express trains
Context triple: [Fern Rock–Olney express segment, usedBy, Broad Street Line express trains]
  • A. Broad Street Line local trains chosen
    Broad Street Line local trains are Philadelphia subway services that make all stops along the Broad Street Line, providing frequent local transit through North, Center City, and South Philadelphia.
  • B. Long Beach–Penn Station trains
    Long Beach–Penn Station trains are Long Island Rail Road commuter services that connect Long Beach on Long Island’s South Shore with New York City’s Pennsylvania Station.
  • C. Blue Line trains
    Blue Line trains are rapid transit trains operating on the MBTA’s Blue Line in the Boston metropolitan area, connecting downtown Boston with East Boston and surrounding coastal neighborhoods.
  • D. A-train commuter rail
    The A-train commuter rail is a regional passenger rail line in North Texas that connects Denton to the Dallas–Fort Worth area as part of the Denton County Transportation Authority network.
  • E. Mitre Line commuter rail
    The Mitre Line commuter rail is a major suburban railway service in Buenos Aires that connects the city with several northern metropolitan areas.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d6aa979bdc8190bf0e79104cc098c1 elicitation completed
NER batch_69d797e709648190adbb05197e15ff76 ner completed
NED1 batch_69e3a9b70074819084c725c5babf2fb7 ned_source_triple completed
Created at: April 8, 2026, 9:25 p.m.