Triple

T4241835
Position Surface form Disambiguated ID Type / Status
Subject North Central Service E95430 entity
Predicate hasStation P35 FINISHED
Object Vernon Hills station
Vernon Hills station is a commuter rail stop in Vernon Hills, Illinois, served by Metra’s North Central Service line connecting the northern suburbs to downtown Chicago.
 E430247 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: Vernon Hills station | Statement: [North Central Service, hasStation, Vernon Hills station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Vernon Hills station
Context triple: [North Central Service, hasStation, Vernon Hills station]
  • A. Glenview station
    Glenview station is a commuter rail station in Glenview, Illinois, serving as a stop for Metra and Amtrak trains in the Chicago metropolitan area.
  • B. Glen Ellyn station
    Glen Ellyn station is a commuter rail stop in Glen Ellyn, Illinois, served by Metra's Union Pacific/West Line connecting the suburb to downtown Chicago.
  • C. Westmont station
    Westmont station is a commuter rail stop in Westmont, Illinois, serving Metra’s BNSF Railway Line between Chicago and its western suburbs.
  • D. Berwyn station
    Berwyn station is a commuter rail stop in Berwyn, Illinois, served by Metra trains on the BNSF Railway Line connecting the suburb to downtown Chicago.
  • E. Oakton–Skokie station
    Oakton–Skokie station is a Chicago Transit Authority rapid transit stop in Skokie, Illinois, serving as a local access point on the Yellow Line.
  • 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: Vernon Hills station
Triple: [North Central Service, hasStation, Vernon Hills station]
Generated description
Vernon Hills station is a commuter rail stop in Vernon Hills, Illinois, served by Metra’s North Central Service line connecting the northern suburbs to downtown Chicago.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Vernon Hills station
Target entity description: Vernon Hills station is a commuter rail stop in Vernon Hills, Illinois, served by Metra’s North Central Service line connecting the northern suburbs to downtown Chicago.
  • A. Glenview station
    Glenview station is a commuter rail station in Glenview, Illinois, serving as a stop for Metra and Amtrak trains in the Chicago metropolitan area.
  • B. Glen Ellyn station
    Glen Ellyn station is a commuter rail stop in Glen Ellyn, Illinois, served by Metra's Union Pacific/West Line connecting the suburb to downtown Chicago.
  • C. Westmont station
    Westmont station is a commuter rail stop in Westmont, Illinois, serving Metra’s BNSF Railway Line between Chicago and its western suburbs.
  • D. Berwyn station
    Berwyn station is a commuter rail stop in Berwyn, Illinois, served by Metra trains on the BNSF Railway Line connecting the suburb to downtown Chicago.
  • E. Oakton–Skokie station
    Oakton–Skokie station is a Chicago Transit Authority rapid transit stop in Skokie, Illinois, serving as a local access point on the Yellow Line.
  • 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_69b3453d91548190b4d4ef8fe52aa2ac completed March 12, 2026, 10:59 p.m.
NER Named-entity recognition batch_69b34e891bc08190831187da4f553f48 completed March 12, 2026, 11:38 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5d05f55f48190b671830e173ef2ba completed March 14, 2026, 9:17 p.m.
NEDg Description generation batch_69b5d0e2a6948190999ce89edfd3922c completed March 14, 2026, 9:19 p.m.
NED2 Entity disambiguation (via description) batch_69b5d11b84ac8190a19015567d4c135a completed March 14, 2026, 9:20 p.m.
Created at: March 12, 2026, 11:05 p.m.