Triple

T4935520
Position Surface form Disambiguated ID Type / Status
Subject BMT Myrtle Avenue Line E110801 entity
Predicate formerExtension P60482 FINISHED
Object Myrtle Avenue elevated in Downtown Brooklyn
The Myrtle Avenue elevated in Downtown Brooklyn was a now-demolished elevated rapid transit line in Brooklyn, New York City, that once carried trains of the BMT system above Myrtle Avenue.
E481017 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: Myrtle Avenue elevated in Downtown Brooklyn | Statement: [BMT Myrtle Avenue Line, formerExtension, Myrtle Avenue elevated in Downtown Brooklyn]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Myrtle Avenue elevated in Downtown Brooklyn
Context triple: [BMT Myrtle Avenue Line, formerExtension, Myrtle Avenue elevated in Downtown Brooklyn]
  • A. Atlantic Avenue Elevated
    Atlantic Avenue Elevated was an early 20th-century elevated railway line in Boston that ran along the city’s waterfront, providing rapid transit service before its closure and demolition.
  • B. Liberty Avenue elevated
    Liberty Avenue elevated is a former elevated rapid transit line in Brooklyn and Queens that once carried BMT trains along Liberty Avenue before being partially incorporated into the IND Fulton Street and Rockaway Lines.
  • C. Eighth Avenue Line in Manhattan
    The Eighth Avenue Line in Manhattan is a major New York City Subway trunk line running under Eighth Avenue, carrying several IND services through Midtown and Upper Manhattan.
  • D. Brooklyn Elevated Railroad
    The Brooklyn Elevated Railroad was a late 19th- and early 20th-century elevated railway company in Brooklyn, New York City, that operated several rapid transit lines before being absorbed into the city’s unified transit system.
  • E. Queens Boulevard retail corridor
    The Queens Boulevard retail corridor is a major commercial strip in Queens, New York City, lined with shopping centers, chain stores, and local businesses that serve as a key shopping destination for surrounding neighborhoods like Rego Park.
  • 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: Myrtle Avenue elevated in Downtown Brooklyn
Triple: [BMT Myrtle Avenue Line, formerExtension, Myrtle Avenue elevated in Downtown Brooklyn]
Generated description
The Myrtle Avenue elevated in Downtown Brooklyn was a now-demolished elevated rapid transit line in Brooklyn, New York City, that once carried trains of the BMT system above Myrtle Avenue.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Myrtle Avenue elevated in Downtown Brooklyn
Target entity description: The Myrtle Avenue elevated in Downtown Brooklyn was a now-demolished elevated rapid transit line in Brooklyn, New York City, that once carried trains of the BMT system above Myrtle Avenue.
  • A. Atlantic Avenue Elevated
    Atlantic Avenue Elevated was an early 20th-century elevated railway line in Boston that ran along the city’s waterfront, providing rapid transit service before its closure and demolition.
  • B. Liberty Avenue elevated
    Liberty Avenue elevated is a former elevated rapid transit line in Brooklyn and Queens that once carried BMT trains along Liberty Avenue before being partially incorporated into the IND Fulton Street and Rockaway Lines.
  • C. Eighth Avenue Line in Manhattan
    The Eighth Avenue Line in Manhattan is a major New York City Subway trunk line running under Eighth Avenue, carrying several IND services through Midtown and Upper Manhattan.
  • D. Brooklyn Elevated Railroad
    The Brooklyn Elevated Railroad was a late 19th- and early 20th-century elevated railway company in Brooklyn, New York City, that operated several rapid transit lines before being absorbed into the city’s unified transit system.
  • E. Queens Boulevard retail corridor
    The Queens Boulevard retail corridor is a major commercial strip in Queens, New York City, lined with shopping centers, chain stores, and local businesses that serve as a key shopping destination for surrounding neighborhoods like Rego Park.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerExtension
Context triple: [BMT Myrtle Avenue Line, formerExtension, Myrtle Avenue elevated in Downtown Brooklyn]
  • A. extension
    Indicates that one entity is a lengthening, continuation, or added part of another entity beyond its original limits.
  • B. architectOfExtension
    Indicates that one entity served as the architect responsible for designing an extension to another entity (such as a building or structure).
  • C. extendedFrom
    Indicates that one entity is derived by adding to or building upon the scope, content, or structure of another entity.
  • D. extendedBy
    Indicates that one entity builds upon, enlarges, or adds to the scope, functionality, or duration of another entity.
  • E. plannedExtensionTo
    Indicates that one entity is intended or scheduled to be extended, expanded, or continued by another entity in the future.
  • F. None of above. chosen

Provenance (7 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_69bd4415eee08190bdce70276e56a5b4 completed March 20, 2026, 12:56 p.m.
NER Named-entity recognition batch_69bd706825188190b854dca5ca2f9db6 completed March 20, 2026, 4:06 p.m.
NED1 Entity disambiguation (via context triple) batch_69be77b74c748190a995a26f45b79ee9 completed March 21, 2026, 10:49 a.m.
NEDg Description generation batch_69be7868a9148190b9f165fb2406dd9d completed March 21, 2026, 10:52 a.m.
NED2 Entity disambiguation (via description) batch_69be7915a26c81909b21a128daebf5b3 completed March 21, 2026, 10:55 a.m.
PD Predicate disambiguation batch_69bd6c389b9881908ad7fb1c5393c1b1 completed March 20, 2026, 3:48 p.m.
PDg Predicate description generation batch_69bd6ff731188190a9903602122d4ff9 completed March 20, 2026, 4:04 p.m.
Created at: March 20, 2026, 1:30 p.m.