Triple

T11724295
Position Surface form Disambiguated ID Type / Status
Subject Brooklyn–Manhattan Transit Corporation E278718 entity
Predicate operatedLine P848 FINISHED
Object BMT Culver Line (elevated portion)
The BMT Culver Line (elevated portion) was an elevated rapid transit line in Brooklyn that formed part of New York City’s early 20th-century subway system.
 E942972 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: BMT Culver Line (elevated portion) | Statement: [Brooklyn–Manhattan Transit Corporation, operatedLine, BMT Culver Line (elevated portion)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: BMT Culver Line (elevated portion)
Context triple: [Brooklyn–Manhattan Transit Corporation, operatedLine, BMT Culver Line (elevated portion)]
  • A. BMT Franklin Avenue Line
    The BMT Franklin Avenue Line is a short New York City Subway shuttle route in Brooklyn that connects the Fulton Street Line with the Brighton Line.
  • B. BMT Fourth Avenue Line
    The BMT Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn, running beneath Fourth Avenue and serving as a key corridor for multiple services.
  • C. BMT Archer Avenue Line
    The BMT Archer Avenue Line is a New York City Subway line in Queens that carries BMT services to and from the Jamaica Center–Parsons/Archer terminal.
  • D. BMT Myrtle Avenue Line
    The BMT Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens that primarily carries the M train along an elevated route.
  • E. BMT West End Line
    The BMT West End Line is a New York City Subway line in Brooklyn that runs primarily along New Utrecht Avenue and serves as part of the modern D train route.
  • 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: BMT Culver Line (elevated portion)
Triple: [Brooklyn–Manhattan Transit Corporation, operatedLine, BMT Culver Line (elevated portion)]
Generated description
The BMT Culver Line (elevated portion) was an elevated rapid transit line in Brooklyn that formed part of New York City’s early 20th-century subway system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: BMT Culver Line (elevated portion)
Target entity description: The BMT Culver Line (elevated portion) was an elevated rapid transit line in Brooklyn that formed part of New York City’s early 20th-century subway system.
  • A. BMT Franklin Avenue Line
    The BMT Franklin Avenue Line is a short New York City Subway shuttle route in Brooklyn that connects the Fulton Street Line with the Brighton Line.
  • B. BMT Fourth Avenue Line
    The BMT Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn, running beneath Fourth Avenue and serving as a key corridor for multiple services.
  • C. BMT Archer Avenue Line
    The BMT Archer Avenue Line is a New York City Subway line in Queens that carries BMT services to and from the Jamaica Center–Parsons/Archer terminal.
  • D. BMT Myrtle Avenue Line
    The BMT Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens that primarily carries the M train along an elevated route.
  • E. BMT West End Line
    The BMT West End Line is a New York City Subway line in Brooklyn that runs primarily along New Utrecht Avenue and serves as part of the modern D train route.
  • 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_69d6aaffec6881908bead509e8621742 completed April 8, 2026, 7:22 p.m.
NER Named-entity recognition batch_69d8a4d603cc8190b2e68d0bdd793362 completed April 10, 2026, 7:20 a.m.
NED1 Entity disambiguation (via context triple) batch_69ef83d9fe70819089b9f3585188f96c completed April 27, 2026, 3:42 p.m.
NEDg Description generation batch_69ef96b13be881908102ffa867f96c22 completed April 27, 2026, 5:02 p.m.
NED2 Entity disambiguation (via description) batch_69efb51113708190998b570c33b9d0e7 completed April 27, 2026, 7:12 p.m.
Created at: April 8, 2026, 9:41 p.m.