Triple

T13441332
Position Surface form Disambiguated ID Type / Status
Subject State Street Subway E320367 entity
Predicate builtBy P972 FINISHED
Object City of Chicago Department of Subways and Superhighways
The City of Chicago Department of Subways and Superhighways was a municipal agency responsible for planning, constructing, and overseeing major subway and expressway infrastructure in Chicago.
 E1040962 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: City of Chicago Department of Subways and Superhighways | Statement: [State Street Subway, builtBy, City of Chicago Department of Subways and Superhighways]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: City of Chicago Department of Subways and Superhighways
Context triple: [State Street Subway, builtBy, City of Chicago Department of Subways and Superhighways]
  • A. South Side elevated lines of Chicago
    The South Side elevated lines of Chicago are a historic segment of the city’s rapid transit system serving Chicago’s South Side neighborhoods as part of the “L” network.
  • B. Chicago elevated railways
    Chicago elevated railways are a historic urban rapid transit system in Chicago, known for their distinctive above-ground tracks and central role in the city’s public transportation network.
  • C. South Chicago Branch of Metra Electric District
    The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
  • D. Chicago "L"
    The Chicago "L" is the elevated rapid transit system serving Chicago and some surrounding suburbs, known for its iconic above-ground tracks and extensive urban rail network.
  • E. Senate Subway System
    The Senate Subway System is an underground rail network in the U.S. Capitol complex that transports senators and staff between the Capitol and nearby Senate office buildings.
  • 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: City of Chicago Department of Subways and Superhighways
Triple: [State Street Subway, builtBy, City of Chicago Department of Subways and Superhighways]
Generated description
The City of Chicago Department of Subways and Superhighways was a municipal agency responsible for planning, constructing, and overseeing major subway and expressway infrastructure in Chicago.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: City of Chicago Department of Subways and Superhighways
Target entity description: The City of Chicago Department of Subways and Superhighways was a municipal agency responsible for planning, constructing, and overseeing major subway and expressway infrastructure in Chicago.
  • A. South Side elevated lines of Chicago
    The South Side elevated lines of Chicago are a historic segment of the city’s rapid transit system serving Chicago’s South Side neighborhoods as part of the “L” network.
  • B. Chicago elevated railways
    Chicago elevated railways are a historic urban rapid transit system in Chicago, known for their distinctive above-ground tracks and central role in the city’s public transportation network.
  • C. South Chicago Branch of Metra Electric District
    The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
  • D. Chicago "L"
    The Chicago "L" is the elevated rapid transit system serving Chicago and some surrounding suburbs, known for its iconic above-ground tracks and extensive urban rail network.
  • E. Senate Subway System
    The Senate Subway System is an underground rail network in the U.S. Capitol complex that transports senators and staff between the Capitol and nearby Senate office buildings.
  • 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_69d80761e6cc8190a90c844589998ecc completed April 9, 2026, 8:09 p.m.
NER Named-entity recognition batch_69dbaee704ac8190b4c7f4e0d3a88494 completed April 12, 2026, 2:40 p.m.
NED1 Entity disambiguation (via context triple) batch_69f7399421908190a7750e37c89a73f6 completed May 3, 2026, 12:03 p.m.
NEDg Description generation batch_69f73b5f6d60819099f405d5d97e68e9 completed May 3, 2026, 12:11 p.m.
NED2 Entity disambiguation (via description) batch_69f73f549af081908ed018a18b3f31f7 completed May 3, 2026, 12:28 p.m.
Created at: April 9, 2026, 9:40 p.m.