Triple

T7779919
Position Surface form Disambiguated ID Type / Status
Subject SEPTA West Trenton Line E221485 entity
Predicate usesRailroad P522 FINISHED
Object CSX Trenton Subdivision (passenger trackage rights) E174050 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: CSX Trenton Subdivision (passenger trackage rights) | Statement: [SEPTA West Trenton Line, usesRailroad, CSX Trenton Subdivision (passenger trackage rights)]

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: CSX Trenton Subdivision (passenger trackage rights)
Context triple: [SEPTA West Trenton Line, usesRailroad, CSX Trenton Subdivision (passenger trackage rights)]
  • A. CSX Trenton Subdivision chosen
    The CSX Trenton Subdivision is a freight rail line in the northeastern United States operated by CSX Transportation, forming part of a major corridor between Philadelphia and North Jersey.
  • B. CSX Bellwood Subdivision
    The CSX Bellwood Subdivision is a freight rail line in Virginia operated by CSX Transportation, forming part of the company’s network around the Richmond area.
  • C. CSX RF&P Subdivision
    The CSX RF&P Subdivision is a major CSX Transportation rail line in Virginia that forms part of the busy freight and passenger corridor linking Washington, D.C. with Richmond and points south.
  • D. CSX Capital Subdivision
    CSX Capital Subdivision is a CSX Transportation rail line in Maryland that serves as a key freight and commuter corridor between Washington, D.C., and Baltimore.
  • E. CSX Old Main Line Subdivision
    The CSX Old Main Line Subdivision is a historic freight rail line in Maryland that traces much of the original route of the Baltimore and Ohio Railroad, one of the oldest railroads in the United States.
  • 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_69ca83ebbef881909ac47f789145fef7 elicitation completed
NER batch_69caa4d59bf881909a8b2d57748784b1 ner completed
NED1 batch_69caf5af0a6c819091f43ac7eda2065e ned_source_triple completed
Created at: March 30, 2026, 4:19 p.m.