Triple

T6683540
Position Surface form Disambiguated ID Type / Status
Subject Western Avenue (Milwaukee District) E152043 entity
Predicate nearbyFacility P350 FINISHED
Object Metra Western Avenue Yard
Metra Western Avenue Yard is a major rail yard and maintenance facility in Chicago used for storing and servicing Metra commuter trains, particularly those on the Milwaukee District lines.
E612061 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: Metra Western Avenue Yard | Statement: [Western Avenue (Milwaukee District), nearbyFacility, Metra Western Avenue Yard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Metra Western Avenue Yard
Context triple: [Western Avenue (Milwaukee District), nearbyFacility, Metra Western Avenue Yard]
  • A. North Avenue Light Rail Yard
    North Avenue Light Rail Yard is a major maintenance, storage, and operations facility serving Baltimore’s Light RailLink system.
  • B. 207th Street Yard
    The 207th Street Yard is a major New York City Subway maintenance and storage facility in Upper Manhattan that services and houses A line trains and other IND rolling stock.
  • C. Barrington Metra station
    Barrington Metra station is a commuter rail station in Barrington, Illinois, serving as a stop on Metra's Union Pacific Northwest Line connecting the suburb to downtown Chicago.
  • D. Hanover Park Metra station
    Hanover Park Metra station is a commuter rail station in Hanover Park, Illinois, serving Metra’s Milwaukee District/West Line between Chicago and its northwestern suburbs.
  • E. Metra Rock Island District 35th Street station
    Metra Rock Island District 35th Street station is a commuter rail stop in Chicago serving the Rock Island District line, located near Guaranteed Rate Field and providing access to the surrounding Bronzeville and Bridgeport areas.
  • 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: Metra Western Avenue Yard
Triple: [Western Avenue (Milwaukee District), nearbyFacility, Metra Western Avenue Yard]
Generated description
Metra Western Avenue Yard is a major rail yard and maintenance facility in Chicago used for storing and servicing Metra commuter trains, particularly those on the Milwaukee District lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Metra Western Avenue Yard
Target entity description: Metra Western Avenue Yard is a major rail yard and maintenance facility in Chicago used for storing and servicing Metra commuter trains, particularly those on the Milwaukee District lines.
  • A. North Avenue Light Rail Yard
    North Avenue Light Rail Yard is a major maintenance, storage, and operations facility serving Baltimore’s Light RailLink system.
  • B. 207th Street Yard
    The 207th Street Yard is a major New York City Subway maintenance and storage facility in Upper Manhattan that services and houses A line trains and other IND rolling stock.
  • C. Barrington Metra station
    Barrington Metra station is a commuter rail station in Barrington, Illinois, serving as a stop on Metra's Union Pacific Northwest Line connecting the suburb to downtown Chicago.
  • D. Hanover Park Metra station
    Hanover Park Metra station is a commuter rail station in Hanover Park, Illinois, serving Metra’s Milwaukee District/West Line between Chicago and its northwestern suburbs.
  • E. Metra Rock Island District 35th Street station
    Metra Rock Island District 35th Street station is a commuter rail stop in Chicago serving the Rock Island District line, located near Guaranteed Rate Field and providing access to the surrounding Bronzeville and Bridgeport areas.
  • 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_69c687f9977c819097e7f5ada4fe522e completed March 27, 2026, 1:36 p.m.
NER Named-entity recognition batch_69c6b122df14819082068af37611b691 completed March 27, 2026, 4:32 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6f7ae8f388190a3c78c89b7293804 completed March 27, 2026, 9:33 p.m.
NEDg Description generation batch_69c6f9f7b4b08190b5c4dab67758af67 completed March 27, 2026, 9:43 p.m.
NED2 Entity disambiguation (via description) batch_69c6fac7c0e881909b4c2058beebda9f completed March 27, 2026, 9:46 p.m.
Created at: March 27, 2026, 2:04 p.m.