Triple

T7335804
Position Surface form Disambiguated ID Type / Status
Subject Downers Grove Main Street station E169123 entity
Predicate servesLine P839 FINISHED
Object 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.
E657837 NE FINISHED

How this triple was built (4 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 – Aurora route | Statement: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago Union Station – Aurora route
Context triple: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
  • A. Metra Rock Island District line
    The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
  • B. Elburn station
    Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
  • C. IND 63rd Street Line
    The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
  • D. Addison (Brown Line)
    Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
  • E. University City Boulevard station
    University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Chicago Union Station – Aurora route
Triple: [Downers Grove Main Street station, servesLine, Chicago Union Station – Aurora route]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago Union Station – Aurora route
Target entity description: 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.
  • A. Metra Rock Island District line
    The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
  • B. Elburn station
    Elburn station is a commuter rail station in Elburn, Illinois, serving as the western endpoint of Metra’s Union Pacific West Line to Chicago.
  • C. IND 63rd Street Line
    The IND 63rd Street Line is a New York City Subway line in Manhattan and Queens that carries F and sometimes other services through the 63rd Street Tunnel.
  • D. Addison (Brown Line)
    Addison is an elevated Chicago 'L' station on the CTA's Brown Line serving the North Center/Lincoln Square area.
  • E. University City Boulevard station
    University City Boulevard station is a light rail stop on Charlotte's LYNX Blue Line serving the University City area near the University of North Carolina at Charlotte.
  • F. None of above. chosen

Provenance (5 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_69c68a568a6481908f11e20db7bc8446 completed March 27, 2026, 1:47 p.m.
NER Named-entity recognition batch_69c6f0c38d6c81908a57ef1eea0e4951 completed March 27, 2026, 9:04 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7ef22d6ac819087f05d6e6787509a completed March 28, 2026, 3:09 p.m.
NEDg Description generation batch_69c7f58ddcf88190bfc15f673083c009 completed March 28, 2026, 3:36 p.m.
NED2 Entity disambiguation (via description) batch_69c7f615d6d48190933ac515874299b9 completed March 28, 2026, 3:39 p.m.
Created at: March 27, 2026, 3:04 p.m.