Triple

T15874986
Position Surface form Disambiguated ID Type / Status
Subject Broad Street Line local trains E384929 entity
Predicate transitSystem P1288 FINISHED
Object SEPTA Broad Street Line E8578 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: SEPTA Broad Street Line | Statement: [Broad Street Line local trains, transitSystem, SEPTA Broad Street Line]

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: SEPTA Broad Street Line
Context triple: [Broad Street Line local trains, transitSystem, SEPTA Broad Street Line]
  • A. SEPTA Broad Street Line chosen
    The SEPTA Broad Street Line is a rapid transit subway line running primarily along Broad Street in Philadelphia, providing north–south service through the city’s central corridor.
  • B. SEPTA Market–Frankford Line
    The SEPTA Market–Frankford Line is a major rapid transit route in Philadelphia that runs east–west across the city, connecting key neighborhoods and commercial districts.
  • C. SEPTA Main Line
    The SEPTA Main Line is a key commuter rail corridor in the Philadelphia region, carrying multiple Regional Rail services through numerous suburban and urban stations.
  • D. SEPTA Trenton Line
    The SEPTA Trenton Line is a commuter rail service in the Philadelphia region that connects Center City Philadelphia with Trenton, New Jersey as part of SEPTA's Regional Rail network.
  • E. SEPTA Warminster Line
    The SEPTA Warminster Line is a commuter rail service in the Philadelphia region that connects Center City with suburban communities to the north, terminating in Warminster, Pennsylvania.
  • 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_69d86da4e86481909f1325fdc971b5ec elicitation completed
NER batch_69e155fcffbc8190ba6d133107b83a7f ner completed
NED1 batch_69ffa94e9b548190bec74e6d9790d241 ned_source_triple completed
Created at: April 10, 2026, 4:51 a.m.