Triple

T12831449
Position Surface form Disambiguated ID Type / Status
Subject Philadelphia subway system E306795 entity
Predicate openedLine P990 FINISHED
Object Market–Frankford Line E1071 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: Market–Frankford Line | Statement: [Philadelphia subway system, openedLine, Market–Frankford 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: Market–Frankford Line
Context triple: [Philadelphia subway system, openedLine, Market–Frankford Line]
  • A. Fairmount Line
    The Fairmount Line is a commuter rail service in the Boston area that connects South Station with neighborhoods in Dorchester, Mattapan, and Hyde Park.
  • B. Manayunk/Norristown Line
    The Manayunk/Norristown Line is a commuter rail route in the Philadelphia region that runs along the Schuylkill River, connecting Center City Philadelphia with Manayunk, Norristown, and surrounding suburbs.
  • C. SEPTA Market–Frankford Line chosen
    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.
  • D. SEPTA Broad Street Line
    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.
  • E. SEPTA Fox Chase Line
    The SEPTA Fox Chase Line is a commuter rail service in the Philadelphia area that connects Center City with the Fox Chase neighborhood in Northeast Philadelphia.
  • 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_69d7bdf52b94819096d6f0ba4ab50a98 elicitation completed
NER batch_69d96fb0bb208190bdc4d3dc7909be06 ner completed
NED1 batch_69f6cbb93c688190910ffb6bc6fbef3f ned_source_triple completed
Created at: April 9, 2026, 5:34 p.m.