Triple

T4222507
Position Surface form Disambiguated ID Type / Status
Subject SouthWest Service line E94374 entity
Predicate terminus P388 FINISHED
Object Chicago Union Station E17115 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: Chicago Union Station | Statement: [SouthWest Service line, terminus, Chicago Union Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chicago Union Station
Context triple: [SouthWest Service line, terminus, Chicago Union Station]
  • A. Chicago Union Station chosen
    Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
  • B. Springfield Union Station
    Springfield Union Station is a historic intermodal transportation hub in downtown Springfield, Massachusetts, serving as a major regional center for rail and bus travel.
  • C. Dallas Union Station
    Dallas Union Station is a historic railway and transit hub in downtown Dallas, Texas, serving Amtrak, commuter rail, and local light rail services.
  • D. Union Station
    Union Station is a historic former railroad terminal in St. Louis that has been transformed into a mixed-use complex featuring attractions, dining, and entertainment.
  • E. Union Station
    Union Station is a historic train station name commonly used for major passenger rail terminals in several North American cities.
  • 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_69b3451997e08190851db4a9a588837d completed March 12, 2026, 10:58 p.m.
NER Named-entity recognition batch_69b34e0f4f18819089779c37c626762e completed March 12, 2026, 11:36 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5d05b964881908d7d52b70cec2dcc completed March 14, 2026, 9:17 p.m.
Created at: March 12, 2026, 11:04 p.m.