Triple

T13455503

Position	Surface form	Disambiguated ID	Type / Status
Subject	IND/BMT Division	`E311220`	entity
Predicate	sharesInfrastructureWith	`P2507`	FINISHED
Object	IRT Division (limited connections and yards only) The IRT Division (limited connections and yards only) is a subset of New York City’s subway infrastructure where the former Interborough Rapid Transit lines interface in restricted ways—mainly via track connections and shared maintenance yards—with the IND/BMT Division.	`E1041505`	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: IRT Division (limited connections and yards only) | Statement: [IND/BMT Division, sharesInfrastructureWith, IRT Division (limited connections and yards only)]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: IRT Division (limited connections and yards only)
Context triple: [IND/BMT Division, sharesInfrastructureWith, IRT Division (limited connections and yards only)]

A. Railway Division
The Railway Division is a specialist branch of the Institution of Mechanical Engineers that focuses on railway engineering, technology, and industry practice.
B. Conrail
Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
C. Rock Island District suburban commuter service
Rock Island District suburban commuter service is a Metra-operated commuter rail line in the Chicago area that connects downtown Chicago with its southwestern suburbs.
D. Salem railway division
Salem railway division is an administrative division of Indian Railways responsible for managing railway operations and infrastructure in and around Salem in the state of Tamil Nadu.
E. Central Trains (former)
Central Trains was a former British train operating company that provided regional and local passenger rail services across the Midlands and surrounding areas in England.
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: IRT Division (limited connections and yards only)
Triple: [IND/BMT Division, sharesInfrastructureWith, IRT Division (limited connections and yards only)]

Generated description

The IRT Division (limited connections and yards only) is a subset of New York City’s subway infrastructure where the former Interborough Rapid Transit lines interface in restricted ways—mainly via track connections and shared maintenance yards—with the IND/BMT Division.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: IRT Division (limited connections and yards only)
Target entity description: The IRT Division (limited connections and yards only) is a subset of New York City’s subway infrastructure where the former Interborough Rapid Transit lines interface in restricted ways—mainly via track connections and shared maintenance yards—with the IND/BMT Division.

A. Railway Division
The Railway Division is a specialist branch of the Institution of Mechanical Engineers that focuses on railway engineering, technology, and industry practice.
B. Conrail
Conrail was a major U.S. freight railroad formed in the 1970s to take over and revitalize the operations of several bankrupt Northeastern railroads.
C. Rock Island District suburban commuter service
Rock Island District suburban commuter service is a Metra-operated commuter rail line in the Chicago area that connects downtown Chicago with its southwestern suburbs.
D. Salem railway division
Salem railway division is an administrative division of Indian Railways responsible for managing railway operations and infrastructure in and around Salem in the state of Tamil Nadu.
E. Central Trains (former)
Central Trains was a former British train operating company that provided regional and local passenger rail services across the Midlands and surrounding areas in England.
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_69d806a938b8819097ec43a2229fc7f9`	completed	April 9, 2026, 8:06 p.m.
NER	Named-entity recognition	`batch_69dbaefc52448190b30d7999f44a9765`	completed	April 12, 2026, 2:41 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69f7399e33008190b10c14f30ff0c0d2`	completed	May 3, 2026, 12:03 p.m.
NEDg	Description generation	`batch_69f73e59f4d88190b13904a347072cdd`	completed	May 3, 2026, 12:23 p.m.
NED2	Entity disambiguation (via description)	`batch_69f73ece474c81909007cf1330a5b8c1`	completed	May 3, 2026, 12:25 p.m.

Created at: April 9, 2026, 9:41 p.m.