Triple

T4527476
Position Surface form Disambiguated ID Type / Status
Subject BMT Brighton Line E106213 entity
Predicate formerName P65 FINISHED
Object Brooklyn, Flatbush and Coney Island line
The Brooklyn, Flatbush and Coney Island line was an early surface and elevated railway in Brooklyn that evolved into what is now known as the BMT Brighton Line of the New York City Subway.
E453093 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: Brooklyn, Flatbush and Coney Island line | Statement: [BMT Brighton Line, formerName, Brooklyn, Flatbush and Coney Island line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Brooklyn, Flatbush and Coney Island line
Context triple: [BMT Brighton Line, formerName, Brooklyn, Flatbush and Coney Island line]
  • A. BMT Canarsie Line
    The BMT Canarsie Line is a New York City Subway rapid transit line in Brooklyn and Manhattan, best known for being served by the L train and running crosstown under 14th Street.
  • B. Brooklyn–Coney Island subway corridor
    The Brooklyn–Coney Island subway corridor is a major rapid transit artery in Brooklyn that connects inland neighborhoods to the Coney Island peninsula via multiple New York City Subway lines.
  • C. Nostrand Avenue Line
    The Nostrand Avenue Line is a New York City Subway route in Brooklyn that branches off the IRT Eastern Parkway Line to serve neighborhoods along Nostrand Avenue, terminating at Flatbush Avenue–Brooklyn College.
  • D. BMT Nassau Street Line
    The BMT Nassau Street Line is a New York City Subway line in Lower Manhattan that primarily carries J and Z trains through the Financial District.
  • E. Queens Boulevard Line
    The Queens Boulevard Line is a major trunk line of the New York City Subway in Queens, carrying multiple services through some of the borough’s busiest residential and commercial corridors.
  • 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: Brooklyn, Flatbush and Coney Island line
Triple: [BMT Brighton Line, formerName, Brooklyn, Flatbush and Coney Island line]
Generated description
The Brooklyn, Flatbush and Coney Island line was an early surface and elevated railway in Brooklyn that evolved into what is now known as the BMT Brighton Line of the New York City Subway.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Brooklyn, Flatbush and Coney Island line
Target entity description: The Brooklyn, Flatbush and Coney Island line was an early surface and elevated railway in Brooklyn that evolved into what is now known as the BMT Brighton Line of the New York City Subway.
  • A. BMT Canarsie Line
    The BMT Canarsie Line is a New York City Subway rapid transit line in Brooklyn and Manhattan, best known for being served by the L train and running crosstown under 14th Street.
  • B. Brooklyn–Coney Island subway corridor
    The Brooklyn–Coney Island subway corridor is a major rapid transit artery in Brooklyn that connects inland neighborhoods to the Coney Island peninsula via multiple New York City Subway lines.
  • C. Nostrand Avenue Line
    The Nostrand Avenue Line is a New York City Subway route in Brooklyn that branches off the IRT Eastern Parkway Line to serve neighborhoods along Nostrand Avenue, terminating at Flatbush Avenue–Brooklyn College.
  • D. BMT Nassau Street Line
    The BMT Nassau Street Line is a New York City Subway line in Lower Manhattan that primarily carries J and Z trains through the Financial District.
  • E. Queens Boulevard Line
    The Queens Boulevard Line is a major trunk line of the New York City Subway in Queens, carrying multiple services through some of the borough’s busiest residential and commercial corridors.
  • 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_69bd43f3d6e08190a91824f833d51bbe completed March 20, 2026, 12:56 p.m.
NER Named-entity recognition batch_69bd577737848190ad509c8bb8e57ec0 completed March 20, 2026, 2:19 p.m.
NED1 Entity disambiguation (via context triple) batch_69bdc55254848190940c506e75d79933 completed March 20, 2026, 10:08 p.m.
NEDg Description generation batch_69bdc8eea638819080c255769a66d651 completed March 20, 2026, 10:23 p.m.
NED2 Entity disambiguation (via description) batch_69bdc96926288190b7a922adf15098f4 completed March 20, 2026, 10:25 p.m.
Created at: March 20, 2026, 1:03 p.m.