Triple

T4130127
Position Surface form Disambiguated ID Type / Status
Subject Pittsburgh History and Landmarks Foundation Historic Landmark E85019 entity
Predicate hasInstance P28232 FINISHED
Object Pennsylvania Railroad Station (Union Station) (PHLF Historic Landmark) E62718 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: Pennsylvania Railroad Station (Union Station) (PHLF Historic Landmark) | Statement: [Pittsburgh History and Landmarks Foundation Historic Landmark, hasInstance, Pennsylvania Railroad Station (Union Station) (PHLF Historic Landmark)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Pennsylvania Railroad Station (Union Station) (PHLF Historic Landmark)
Context triple: [Pittsburgh History and Landmarks Foundation Historic Landmark, hasInstance, Pennsylvania Railroad Station (Union Station) (PHLF Historic Landmark)]
  • A. Pennsylvania Station
    Pennsylvania Station is a major transportation hub in Midtown Manhattan, New York City, serving as one of the busiest rail stations in the United States for Amtrak, commuter rail, and subway lines.
  • B. Penn–North station
    Penn–North station is an underground rapid transit stop on Baltimore’s Metro SubwayLink system serving the Penn-North neighborhood in West Baltimore.
  • C. Union Station (Pittsburgh) chosen
    Union Station (Pittsburgh) is a historic Beaux-Arts railroad terminal in downtown Pittsburgh, renowned for its grand rotunda and role as a major early 20th-century transportation hub.
  • D. Susquehanna–Dauphin station
    Susquehanna–Dauphin station is a subway stop on SEPTA’s Broad Street Line in North Philadelphia serving the surrounding residential and Temple University areas.
  • E. North Philadelphia station
    North Philadelphia station is a transit stop in North Philadelphia, Pennsylvania, serving passengers on SEPTA’s Broad Street Line subway.
  • 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_69aed935ccd881909dc61f81bcdb7a78 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69af0b2c76fc8190b3cd9facfcd6e427 completed March 9, 2026, 6:02 p.m.
NED1 Entity disambiguation (via context triple) batch_69b576bf503c8190be44139a908ee42d completed March 14, 2026, 2:54 p.m.
Created at: March 9, 2026, 3:42 p.m.