Triple

T1225468
Position Surface form Disambiguated ID Type / Status
Subject 15th Street station E26317 entity
Predicate partOfSystem P840 FINISHED
Object SEPTA subway–surface trolley lines E1855 NE FINISHED

How this triple was built (2 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
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 subway–surface trolley lines | Statement: [15th Street station, partOfSystem, SEPTA subway–surface trolley lines]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: SEPTA subway–surface trolley lines
Context triple: [15th Street station, partOfSystem, SEPTA subway–surface trolley lines]
  • A. SEPTA Subway–Surface Trolley Lines chosen
    The SEPTA Subway–Surface Trolley Lines are a network of light rail routes in Philadelphia that operate partly in subway tunnels and partly on city streets, connecting Center City with West Philadelphia and surrounding neighborhoods.
  • B. SEPTA rapid transit network
    The SEPTA rapid transit network is the system of high-capacity urban rail lines serving Philadelphia and some surrounding suburbs, operated by the Southeastern Pennsylvania Transportation Authority.
  • C. SEPTA Regional Rail
    SEPTA Regional Rail is a commuter rail network serving the Philadelphia metropolitan area, connecting the city with its suburbs and neighboring regions.
  • 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 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.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69a49484688c8190a1bf285eb396a8b6 completed March 1, 2026, 7:33 p.m.
NER Named-entity recognition batch_69a4be39908481908cca21aaf0828415 completed March 1, 2026, 10:31 p.m.
NED1 Entity disambiguation (via context triple) batch_69ac93bcdbbc8190a5eb1f4285faa8d4 completed March 7, 2026, 9:08 p.m.
Created at: March 1, 2026, 7:47 p.m.