Triple

T5831616
Position Surface form Disambiguated ID Type / Status
Subject Market East Station E129361 entity
Predicate servesLine P839 FINISHED
Object Chestnut Hill West Line E28964 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: Chestnut Hill West Line | Statement: [Market East Station, servesLine, Chestnut Hill West 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: Chestnut Hill West Line
Context triple: [Market East Station, servesLine, Chestnut Hill West Line]
  • A. Chestnut Hill West Line chosen
    The Chestnut Hill West Line is a commuter rail service in the Philadelphia area that connects Center City with the Chestnut Hill neighborhood.
  • B. Chestnut Hill East Line
    Chestnut Hill East Line is a commuter rail service in the Philadelphia area operated as part of SEPTA’s Regional Rail network.
  • C. Green Line West Branch
    The Green Line West Branch is a segment of Chicago's 'L' rapid transit system that carries Green Line trains between Harlem/Lake and Ashland/63rd on the city's West Side.
  • D. Lowell Line
    The Lowell Line is a Massachusetts Bay Transportation Authority commuter rail route that runs between Boston’s North Station and the city of Lowell, serving communities in the Merrimack Valley.
  • E. 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.
  • 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_69c00849d55481908b4f9f5543e0bf6d elicitation completed
NER batch_69c0346ac31c8190bbd28444f75da875 ner completed
NED1 batch_69c0b0ef1c988190b452158b560cf39f ned_source_triple completed
Created at: March 22, 2026, 3:54 p.m.