Triple

T2134913

Position	Surface form	Disambiguated ID	Type / Status
Subject	Harlem Line	`E46626`	entity
Predicate	connectsWith	`P37`	FINISHED
Object	New Haven Line at Grand Central Terminal The New Haven Line at Grand Central Terminal is a major Metro-North Railroad commuter rail service that originates at Manhattan’s Grand Central Terminal and runs northeast through suburban New York and into Connecticut.	`E238263`	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: New Haven Line at Grand Central Terminal | Statement: [Harlem Line, connectsWith, New Haven Line at Grand Central Terminal]

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

Target entity: New Haven Line at Grand Central Terminal
Context triple: [Harlem Line, connectsWith, New Haven Line at Grand Central Terminal]

A. Hudson Line at Grand Central Terminal
The Hudson Line at Grand Central Terminal is a major Metro-North Railroad commuter rail line serving communities along the Hudson River and terminating at New York City's Grand Central Terminal.
B. Harlem Line of the Metro-North Railroad
The Harlem Line of the Metro-North Railroad is a commuter rail line running from New York City north through Westchester, Putnam, and Dutchess counties, providing key suburban and exurban service into Manhattan.
C. Newark–World Trade Center line
The Newark–World Trade Center line is a PATH rapid transit service connecting Newark, New Jersey, with Lower Manhattan in New York City.
D. Hudson Line
The Hudson Line is a major passenger rail route running along the east bank of the Hudson River in New York, serving both commuter and intercity trains between New York City and points upstate.
E. Metro-North Railroad Hudson Line
The Metro-North Railroad Hudson Line is a major commuter rail route running along the east bank of the Hudson River, connecting New York City with communities throughout the Hudson Valley.
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: New Haven Line at Grand Central Terminal
Triple: [Harlem Line, connectsWith, New Haven Line at Grand Central Terminal]

Generated description

The New Haven Line at Grand Central Terminal is a major Metro-North Railroad commuter rail service that originates at Manhattan’s Grand Central Terminal and runs northeast through suburban New York and into Connecticut.

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

Target entity: New Haven Line at Grand Central Terminal
Target entity description: The New Haven Line at Grand Central Terminal is a major Metro-North Railroad commuter rail service that originates at Manhattan’s Grand Central Terminal and runs northeast through suburban New York and into Connecticut.

A. Hudson Line at Grand Central Terminal
The Hudson Line at Grand Central Terminal is a major Metro-North Railroad commuter rail line serving communities along the Hudson River and terminating at New York City's Grand Central Terminal.
B. Harlem Line of the Metro-North Railroad
The Harlem Line of the Metro-North Railroad is a commuter rail line running from New York City north through Westchester, Putnam, and Dutchess counties, providing key suburban and exurban service into Manhattan.
C. Newark–World Trade Center line
The Newark–World Trade Center line is a PATH rapid transit service connecting Newark, New Jersey, with Lower Manhattan in New York City.
D. Hudson Line
The Hudson Line is a major passenger rail route running along the east bank of the Hudson River in New York, serving both commuter and intercity trains between New York City and points upstate.
E. Metro-North Railroad Hudson Line
The Metro-North Railroad Hudson Line is a major commuter rail route running along the east bank of the Hudson River, connecting New York City with communities throughout the Hudson Valley.
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_69a88a174ab48190a5db20c132e5dccf`	completed	March 4, 2026, 7:37 p.m.
NER	Named-entity recognition	`batch_69abbba34b44819083ed6d93c943439f`	completed	March 7, 2026, 5:46 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69ae58d3275481909c8d74ca7c037ddd`	completed	March 9, 2026, 5:21 a.m.
NEDg	Description generation	`batch_69ae5928f824819089f1044ebd5ff68e`	completed	March 9, 2026, 5:22 a.m.
NED2	Entity disambiguation (via description)	`batch_69ae598b51248190900086fee72c1103`	completed	March 9, 2026, 5:24 a.m.

Created at: March 4, 2026, 7:44 p.m.