Triple

T6029443
Position Surface form Disambiguated ID Type / Status
Subject A train (IND Eighth Avenue Line) E134262 entity
Predicate depot P14646 FINISHED
Object 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.
 E562987 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: 207th Street Yard | Statement: [A train (IND Eighth Avenue Line), depot, 207th Street Yard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 207th Street Yard
Context triple: [A train (IND Eighth Avenue Line), depot, 207th Street Yard]
  • A. East 180th Street Yard
    East 180th Street Yard is a New York City Subway maintenance and storage facility in the Bronx that services trains operating on the Dyre Avenue Line.
  • B. Riverside Yard
    Riverside Yard is a rail yard facility in Newton, Massachusetts, serving as a storage and maintenance area for trains on the MBTA Green Line’s D branch.
  • C. Sunnyside Yard
    Sunnyside Yard is a major rail yard in Queens, New York City, serving as a key hub for Amtrak, NJ Transit, and other commuter rail operations just east of Manhattan.
  • D. Coney Island Yard
    Coney Island Yard is one of the largest New York City Subway maintenance and storage facilities, serving multiple lines in Brooklyn.
  • E. Northumberland Park Depot
    Northumberland Park Depot is a major London Underground maintenance and stabling facility serving trains on the Victoria 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: 207th Street Yard
Triple: [A train (IND Eighth Avenue Line), depot, 207th Street Yard]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 207th Street Yard
Target entity description: 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.
  • A. East 180th Street Yard
    East 180th Street Yard is a New York City Subway maintenance and storage facility in the Bronx that services trains operating on the Dyre Avenue Line.
  • B. Riverside Yard
    Riverside Yard is a rail yard facility in Newton, Massachusetts, serving as a storage and maintenance area for trains on the MBTA Green Line’s D branch.
  • C. Sunnyside Yard
    Sunnyside Yard is a major rail yard in Queens, New York City, serving as a key hub for Amtrak, NJ Transit, and other commuter rail operations just east of Manhattan.
  • D. Coney Island Yard
    Coney Island Yard is one of the largest New York City Subway maintenance and storage facilities, serving multiple lines in Brooklyn.
  • E. Northumberland Park Depot
    Northumberland Park Depot is a major London Underground maintenance and stabling facility serving trains on the Victoria 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_69c0087515148190a97475d412563865 completed March 22, 2026, 3:19 p.m.
NER Named-entity recognition batch_69c0560fdc84819093abba13054ea1ee completed March 22, 2026, 8:50 p.m.
NED1 Entity disambiguation (via context triple) batch_69c11381aa0c81909487a5eb510c9b41 completed March 23, 2026, 10:18 a.m.
NEDg Description generation batch_69c113de5d788190affa46cf416d180d completed March 23, 2026, 10:20 a.m.
NED2 Entity disambiguation (via description) batch_69c1145180008190844d91782929349f completed March 23, 2026, 10:22 a.m.
Created at: March 22, 2026, 4:07 p.m.