Triple

T13759610

Position	Surface form	Disambiguated ID	Type / Status
Subject	Midtown East	`E330567`	entity
Predicate	servedBy	`P82`	FINISHED
Object	Metro-North Railroad at Grand Central Terminal Metro-North Railroad at Grand Central Terminal is a major commuter rail hub in Manhattan that provides regional train service between New York City and its northern suburbs in New York and Connecticut.	`E1067436`	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: Metro-North Railroad at Grand Central Terminal | Statement: [Midtown East, servedBy, Metro-North Railroad at Grand Central Terminal]

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

Target entity: Metro-North Railroad at Grand Central Terminal
Context triple: [Midtown East, servedBy, Metro-North Railroad 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. Grand Central LIRR terminal
Grand Central LIRR terminal is the Long Island Rail Road’s major Manhattan hub located beneath Grand Central Terminal, providing expanded commuter rail service on the East Side of Midtown.
C. Penn Station (New York City)
Penn Station (New York City) is a major underground railroad station and one of the busiest transportation hubs in the United States, serving Amtrak, commuter rail, and subway lines in Midtown Manhattan.
D. 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.
E. Newark Penn Station
Newark Penn Station is a major intercity and commuter rail hub in Newark, New Jersey, serving Amtrak, NJ Transit, PATH, and local transit connections.
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: Metro-North Railroad at Grand Central Terminal
Triple: [Midtown East, servedBy, Metro-North Railroad at Grand Central Terminal]

Generated description

Metro-North Railroad at Grand Central Terminal is a major commuter rail hub in Manhattan that provides regional train service between New York City and its northern suburbs in New York and Connecticut.

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

Target entity: Metro-North Railroad at Grand Central Terminal
Target entity description: Metro-North Railroad at Grand Central Terminal is a major commuter rail hub in Manhattan that provides regional train service between New York City and its northern suburbs in New York and 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. Grand Central LIRR terminal
Grand Central LIRR terminal is the Long Island Rail Road’s major Manhattan hub located beneath Grand Central Terminal, providing expanded commuter rail service on the East Side of Midtown.
C. Penn Station (New York City)
Penn Station (New York City) is a major underground railroad station and one of the busiest transportation hubs in the United States, serving Amtrak, commuter rail, and subway lines in Midtown Manhattan.
D. 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.
E. Newark Penn Station
Newark Penn Station is a major intercity and commuter rail hub in Newark, New Jersey, serving Amtrak, NJ Transit, PATH, and local transit connections.
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_69d81c573f288190aa2403d484fa3d49`	completed	April 9, 2026, 9:38 p.m.
NER	Named-entity recognition	`batch_69de0223ab9081909db05334860405e0`	completed	April 14, 2026, 9 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69f7c6fe88348190aa9803f7d6d67023`	completed	May 3, 2026, 10:06 p.m.
NEDg	Description generation	`batch_69f7c807e70c8190b15a7d4608a17591`	completed	May 3, 2026, 10:11 p.m.
NED2	Entity disambiguation (via description)	`batch_69f7c8f2b5588190b6143d676eb648a0`	completed	May 3, 2026, 10:15 p.m.

Created at: April 9, 2026, 10:09 p.m.