Triple

T8087088
Position Surface form Disambiguated ID Type / Status
Subject Chester Transportation Center E188758 entity
Predicate category P87 FINISHED
Object SEPTA Regional Rail stations E2901 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 Regional Rail stations | Statement: [Chester Transportation Center, category, SEPTA Regional Rail stations]

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 Regional Rail stations
Context triple: [Chester Transportation Center, category, SEPTA Regional Rail stations]
  • A. SEPTA Regional Rail chosen
    SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
  • B. Suburban Station (SEPTA)
    Suburban Station (SEPTA) is a major underground regional rail hub in Center City Philadelphia that serves as one of SEPTA’s primary commuter rail terminals.
  • C. SEPTA Regional Rail Manayunk station
    SEPTA Regional Rail Manayunk station is a commuter rail stop in the Manayunk neighborhood of Philadelphia that provides regional rail service on SEPTA’s Manayunk/Norristown Line.
  • D. SEPTA Highland station
    SEPTA Highland station is a commuter rail stop on SEPTA's Chestnut Hill West Line serving the Highland neighborhood of Philadelphia, Pennsylvania.
  • E. SEPTA Regional Rail Center City Commuter Tunnel
    The SEPTA Regional Rail Center City Commuter Tunnel is an underground rail corridor in downtown Philadelphia that links multiple regional rail lines through several central stations to provide through-running commuter service beneath Center City.
  • 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_69ca82b662e88190b9323daab8c28a21 elicitation completed
NER batch_69cb4162244481908ab1202a9974deaa ner completed
NED1 batch_69cc6406395c8190ad8db69c878ce9b8 ned_source_triple completed
Created at: March 30, 2026, 5:29 p.m.