Triple

T15362553
Position Surface form Disambiguated ID Type / Status
Subject Division E367323 entity
Predicate partOf P40 FINISHED
Object Milwaukee–Dearborn subway
The Milwaukee–Dearborn subway is a rapid transit subway line in Chicago that forms part of the Chicago Transit Authority’s Blue Line, running through downtown via Dearborn Street.
E868096 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: Milwaukee–Dearborn subway | Statement: [Division, partOf, Milwaukee–Dearborn subway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Milwaukee–Dearborn subway
Context triple: [Division, partOf, Milwaukee–Dearborn subway]
  • A. Dearborn Subway (Blue Line)
    Dearborn Subway (Blue Line) is the underground segment of Chicago’s Blue Line that runs through downtown via Dearborn Street, connecting key Loop stations and facilitating rapid transit across the city’s core.
  • B. Metra Heritage Corridor
    The Metra Heritage Corridor is a commuter rail line in the Chicago metropolitan area that provides weekday service between Chicago Union Station and Joliet, Illinois, largely following the historic Illinois & Michigan Canal corridor.
  • C. Metra Milwaukee District
    Metra Milwaukee District is a commuter rail service corridor in the Chicago metropolitan area that encompasses the Milwaukee District North and West Lines operated by Metra.
  • D. Metra Electric District line
    The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
  • E. Hiawatha Line
    The Hiawatha Line, now known as the METRO Blue Line, is a light rail transit route serving the Minneapolis–Saint Paul metropolitan area in Minnesota.
  • 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: Milwaukee–Dearborn subway
Triple: [Division, partOf, Milwaukee–Dearborn subway]
Generated description
The Milwaukee–Dearborn subway is a rapid transit subway line in Chicago that forms part of the Chicago Transit Authority’s Blue Line, running through downtown via Dearborn Street.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Milwaukee–Dearborn subway
Target entity description: The Milwaukee–Dearborn subway is a rapid transit subway line in Chicago that forms part of the Chicago Transit Authority’s Blue Line, running through downtown via Dearborn Street.
  • A. Dearborn Subway (Blue Line) chosen
    Dearborn Subway (Blue Line) is the underground segment of Chicago’s Blue Line that runs through downtown via Dearborn Street, connecting key Loop stations and facilitating rapid transit across the city’s core.
  • B. Metra Heritage Corridor
    The Metra Heritage Corridor is a commuter rail line in the Chicago metropolitan area that provides weekday service between Chicago Union Station and Joliet, Illinois, largely following the historic Illinois & Michigan Canal corridor.
  • C. Metra Milwaukee District
    Metra Milwaukee District is a commuter rail service corridor in the Chicago metropolitan area that encompasses the Milwaukee District North and West Lines operated by Metra.
  • D. Metra Electric District line
    The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
  • E. Hiawatha Line
    The Hiawatha Line, now known as the METRO Blue Line, is a light rail transit route serving the Minneapolis–Saint Paul metropolitan area in Minnesota.
  • F. None of above.

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_69d85a1483788190ad93c2748e8af34b completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e03e479f188190bbbc3dcd73853e02 completed April 16, 2026, 1:41 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff1343862481908962dfe0ab946b97 completed May 9, 2026, 10:58 a.m.
NEDg Description generation batch_69ff143c0e448190b4775711ee7545d1 completed May 9, 2026, 11:02 a.m.
NED2 Entity disambiguation (via description) batch_69ff14e1a7b881909ad2ba0d35847ea1 completed May 9, 2026, 11:05 a.m.
Created at: April 10, 2026, 3:18 a.m.