Triple

T17465108
Position Surface form Disambiguated ID Type / Status
Subject River Grove station E425254 entity
Predicate connectsTo P845 FINISHED
Object Chicago Union Station (via North Central Service) — NE NERFINISHED

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 (via North Central Service) | Statement: [River Grove station, connectsTo, Chicago Union Station (via North Central Service)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Chicago Union Station (via North Central Service)
Context triple: [River Grove station, connectsTo, Chicago Union Station (via North Central Service)]
  • A. Amtrak services at Chicago Union Station
    Amtrak services at Chicago Union Station comprise a major hub of intercity passenger rail routes connecting Chicago with numerous destinations across the United States.
  • B. Metra commuter rail services at Chicago Union Station chosen
    Metra commuter rail services at Chicago Union Station are a network of regional passenger trains that connect downtown Chicago with its surrounding suburbs via multiple lines terminating or passing through this major terminal.
  • C. Chicago station (Blue Line)
    Chicago station (Blue Line) is an underground Chicago 'L' rapid transit station in the city's River West area, serving the Blue Line between downtown and O'Hare International Airport.
  • D. Chicago Union Station – Aurora route
    The Chicago Union Station – Aurora route is a Metra BNSF Railway commuter rail line in the Chicago metropolitan area that connects downtown Chicago’s Union Station with the western suburb of Aurora.
  • E. Chicago (via Lake Shore Limited)
    Chicago (via Lake Shore Limited) is the western terminus city of Amtrak’s Lake Shore Limited route, a major intercity passenger rail service linking the Midwest and the Northeast.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 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_69d889dbc2e88190b18ea6115e819258 completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e451a6c2e08190bca9de56ee2f5136 completed April 19, 2026, 3:53 a.m.
Created at: April 10, 2026, 5:47 a.m.