Triple

T5613388
Position Surface form Disambiguated ID Type / Status
Subject Burlington Route commuter service E147416 entity
Predicate operatedOnLine P15252 FINISHED
Object Chicago–Downers Grove corridor
The Chicago–Downers Grove corridor is a key suburban rail route in the Chicago metropolitan area, linking the city with the western suburb of Downers Grove and serving as a major commuter artery.
E533991 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–Downers Grove corridor | Statement: [Burlington Route commuter service, operatedOnLine, Chicago–Downers Grove corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Chicago–Downers Grove corridor
Context triple: [Burlington Route commuter service, operatedOnLine, Chicago–Downers Grove corridor]
  • A. Chicago–Milwaukee metropolitan corridor
    The Chicago–Milwaukee metropolitan corridor is a heavily urbanized and economically integrated region stretching along Lake Michigan between Chicago, Illinois, and Milwaukee, Wisconsin.
  • B. Chicago–Ann Arbor corridor
    The Chicago–Ann Arbor corridor is a key Midwestern passenger rail route linking Chicago, Illinois with Ann Arbor, Michigan and other intermediate cities.
  • C. Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area
    The Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area is a large multi-state U.S. metropolitan region centered on Chicago, encompassing numerous surrounding suburbs and communities across Illinois, Indiana, and Wisconsin.
  • D. O'Hare–Forest Park corridor
    The O'Hare–Forest Park corridor is a major transit corridor in the Chicago area served by the Blue Line, connecting O'Hare International Airport with the Forest Park suburb through the city's West Side.
  • E. Chicago–Detroit/Pontiac corridor
    The Chicago–Detroit/Pontiac corridor is a major Midwestern passenger rail route that connects Chicago with Detroit and Pontiac, serving numerous intermediate cities across Illinois and Michigan.
  • 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–Downers Grove corridor
Triple: [Burlington Route commuter service, operatedOnLine, Chicago–Downers Grove corridor]
Generated description
The Chicago–Downers Grove corridor is a key suburban rail route in the Chicago metropolitan area, linking the city with the western suburb of Downers Grove and serving as a major commuter artery.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Chicago–Downers Grove corridor
Target entity description: The Chicago–Downers Grove corridor is a key suburban rail route in the Chicago metropolitan area, linking the city with the western suburb of Downers Grove and serving as a major commuter artery.
  • A. Chicago–Milwaukee metropolitan corridor
    The Chicago–Milwaukee metropolitan corridor is a heavily urbanized and economically integrated region stretching along Lake Michigan between Chicago, Illinois, and Milwaukee, Wisconsin.
  • B. Chicago–Ann Arbor corridor
    The Chicago–Ann Arbor corridor is a key Midwestern passenger rail route linking Chicago, Illinois with Ann Arbor, Michigan and other intermediate cities.
  • C. Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area
    The Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area is a large multi-state U.S. metropolitan region centered on Chicago, encompassing numerous surrounding suburbs and communities across Illinois, Indiana, and Wisconsin.
  • D. O'Hare–Forest Park corridor
    The O'Hare–Forest Park corridor is a major transit corridor in the Chicago area served by the Blue Line, connecting O'Hare International Airport with the Forest Park suburb through the city's West Side.
  • E. Chicago–Detroit/Pontiac corridor
    The Chicago–Detroit/Pontiac corridor is a major Midwestern passenger rail route that connects Chicago with Detroit and Pontiac, serving numerous intermediate cities across Illinois and Michigan.
  • 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_69c00905d4588190bd967842bbcf2219 completed March 22, 2026, 3:21 p.m.
NER Named-entity recognition batch_69c021226cf88190b70b4b51eb5b4144 completed March 22, 2026, 5:04 p.m.
NED1 Entity disambiguation (via context triple) batch_69c0287b14708190bc246e982896ad27 completed March 22, 2026, 5:35 p.m.
NEDg Description generation batch_69c03f8c1a3081908f9d03a6c51d69f0 completed March 22, 2026, 7:14 p.m.
NED2 Entity disambiguation (via description) batch_69c0404f0a3081908850794f9a5cea40 completed March 22, 2026, 7:17 p.m.
Created at: March 22, 2026, 3:39 p.m.