Triple

T1127920
Position Surface form Disambiguated ID Type / Status
Subject Park Street E24761 entity
Predicate partOf P40 FINISHED
Object Tremont Street subway
The Tremont Street subway is the historic underground streetcar tunnel in downtown Boston that forms part of the MBTA Green Line and is recognized as the oldest subway tunnel in North America.
E163466 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: Tremont Street subway | Statement: [Park Street, partOf, Tremont Street subway]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Tremont Street subway
Context triple: [Park Street, partOf, Tremont Street subway]
  • A. Dyckman Street (A line)
    Dyckman Street (A line) is a New York City Subway station on the IND Eighth Avenue Line serving the A train in the Inwood neighborhood of Upper Manhattan.
  • B. Fulton Street (IND Eighth Avenue Line)
    Fulton Street (IND Eighth Avenue Line) is a New York City Subway station in Lower Manhattan served by the A and C trains as part of the larger Fulton Street transit complex.
  • C. Fulton Street (IRT Broadway–Seventh Avenue Line)
    Fulton Street (IRT Broadway–Seventh Avenue Line) is a New York City Subway station in Lower Manhattan serving the 2 and 3 trains as part of the larger Fulton Street transit complex.
  • D. Fulton Street (BMT Nassau Street Line)
    Fulton Street (BMT Nassau Street Line) is a New York City Subway station in Lower Manhattan serving the J and Z trains as part of the larger Fulton Street transit complex.
  • E. 59th Street–Lexington Avenue
    59th Street–Lexington Avenue is a major New York City Subway complex in Midtown Manhattan that serves multiple lines and provides a key transfer point between the Upper East Side and other parts of the city.
  • 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: Tremont Street subway
Triple: [Park Street, partOf, Tremont Street subway]
Generated description
The Tremont Street subway is the historic underground streetcar tunnel in downtown Boston that forms part of the MBTA Green Line and is recognized as the oldest subway tunnel in North America.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Tremont Street subway
Target entity description: The Tremont Street subway is the historic underground streetcar tunnel in downtown Boston that forms part of the MBTA Green Line and is recognized as the oldest subway tunnel in North America.
  • A. Dyckman Street (A line)
    Dyckman Street (A line) is a New York City Subway station on the IND Eighth Avenue Line serving the A train in the Inwood neighborhood of Upper Manhattan.
  • B. Fulton Street (IND Eighth Avenue Line)
    Fulton Street (IND Eighth Avenue Line) is a New York City Subway station in Lower Manhattan served by the A and C trains as part of the larger Fulton Street transit complex.
  • C. Fulton Street (IRT Broadway–Seventh Avenue Line)
    Fulton Street (IRT Broadway–Seventh Avenue Line) is a New York City Subway station in Lower Manhattan serving the 2 and 3 trains as part of the larger Fulton Street transit complex.
  • D. Fulton Street (BMT Nassau Street Line)
    Fulton Street (BMT Nassau Street Line) is a New York City Subway station in Lower Manhattan serving the J and Z trains as part of the larger Fulton Street transit complex.
  • E. 59th Street–Lexington Avenue
    59th Street–Lexington Avenue is a major New York City Subway complex in Midtown Manhattan that serves multiple lines and provides a key transfer point between the Upper East Side and other parts of the city.
  • 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_69a4940712c88190aa244f3fc6070a65 completed March 1, 2026, 7:31 p.m.
NER Named-entity recognition batch_69a4bbdd39b88190bf46de38818fe2df completed March 1, 2026, 10:21 p.m.
NED1 Entity disambiguation (via context triple) batch_69ad0142faf081908cf82f2b73490947 completed March 8, 2026, 4:55 a.m.
NEDg Description generation batch_69ad020222708190a4b383a54418251a completed March 8, 2026, 4:58 a.m.
NED2 Entity disambiguation (via description) batch_69ad02a0c0ac8190b01cf36b76c702f0 completed March 8, 2026, 5:01 a.m.
Created at: March 1, 2026, 7:44 p.m.