Triple

T97731
Position Surface form Disambiguated ID Type / Status
Subject IND Division E1968 entity
Predicate historicalOperator P2834 FINISHED
Object Independent Subway System (IND)
The Independent Subway System (IND) was New York City's municipally built and operated subway network, created in the early 20th century to compete with and eventually replace the privately run IRT and BMT lines.
E35964 NE FINISHED

How this triple was built (5 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: Independent Subway System (IND) | Statement: [IND Division, historicalOperator, Independent Subway System (IND)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Independent Subway System (IND)
Context triple: [IND Division, historicalOperator, Independent Subway System (IND)]
  • A. New York City Subway
    The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
  • B. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • C. Metropolitan West Side Elevated Railroad
    The Metropolitan West Side Elevated Railroad was an early elevated transit line in Chicago that formed part of the city’s first rapid transit system on the West Side.
  • D. Metra
    Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
  • E. IND Rockaway Line (subway portion)
    The IND Rockaway Line (subway portion) is a New York City Subway rapid transit line in Queens that connects central Queens to the Rockaway Peninsula as part of the IND Division.
  • 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: Independent Subway System (IND)
Triple: [IND Division, historicalOperator, Independent Subway System (IND)]
Generated description
The Independent Subway System (IND) was New York City's municipally built and operated subway network, created in the early 20th century to compete with and eventually replace the privately run IRT and BMT lines.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Independent Subway System (IND)
Target entity description: The Independent Subway System (IND) was New York City's municipally built and operated subway network, created in the early 20th century to compete with and eventually replace the privately run IRT and BMT lines.
  • A. New York City Subway
    The New York City Subway is one of the world’s largest and busiest rapid transit systems, serving the five boroughs of New York City with extensive 24/7 underground and elevated rail service.
  • B. Lenox Avenue Line
    The Lenox Avenue Line is a major New York City Subway route in Harlem, Manhattan, primarily served by IRT trains running beneath Lenox Avenue.
  • C. Metropolitan West Side Elevated Railroad
    The Metropolitan West Side Elevated Railroad was an early elevated transit line in Chicago that formed part of the city’s first rapid transit system on the West Side.
  • D. Metra
    Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
  • E. IND Rockaway Line (subway portion)
    The IND Rockaway Line (subway portion) is a New York City Subway rapid transit line in Queens that connects central Queens to the Rockaway Peninsula as part of the IND Division.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: historicalOperator
Context triple: [IND Division, historicalOperator, Independent Subway System (IND)]
  • A. historicalFunction
    Indicates the role, purpose, or activity an entity had during a past period or in a historical context.
  • B. historicallyBorneBy chosen
    Indicates that an entity has carried, possessed, or used another entity (such as a name, title, or symbol) at some point in the past.
  • C. historicalFigure
    Indicates that an entity is recognized as a notable person from the past who played a significant role in history.
  • D. historicalAssessment
    Indicates an evaluation or judgment of something based on its historical context, significance, or development over time.
  • E. hasHistoricalOrigin
    Indicates that something originated, was first established, or came into existence during a specific historical period or context.
  • F. None of above.

Provenance (6 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_69a24d4862f881908cc8b89d3a78031d completed Feb. 28, 2026, 2:04 a.m.
NER Named-entity recognition batch_69a24feef1b08190bb9525f71cce053e completed Feb. 28, 2026, 2:16 a.m.
NED1 Entity disambiguation (via context triple) batch_69a39148b1d0819089f46f9d287a23b3 completed March 1, 2026, 1:07 a.m.
NEDg Description generation batch_69a3932aa7d48190a598d9c0615a72b9 completed March 1, 2026, 1:15 a.m.
NED2 Entity disambiguation (via description) batch_69a393794150819092f44b23ba95c449 completed March 1, 2026, 1:16 a.m.
PD Predicate disambiguation batch_69a24ebe7b1c8190a6bfbf31dc7c7f07 completed Feb. 28, 2026, 2:11 a.m.
Created at: Feb. 28, 2026, 2:09 a.m.