Triple

T6023940

Position	Surface form	Disambiguated ID	Type / Status
Subject	New Haven–Springfield Line	`E134127`	entity
Predicate	connectsToLine	`P35490`	FINISHED
Object	Northeast Corridor at New Haven The Northeast Corridor at New Haven is a major junction on the busy Boston–Washington rail corridor where intercity and regional trains connect with inland routes such as the New Haven–Springfield Line.	`E563572`	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: Northeast Corridor at New Haven | Statement: [New Haven–Springfield Line, connectsToLine, Northeast Corridor at New Haven]

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

Target entity: Northeast Corridor at New Haven
Context triple: [New Haven–Springfield Line, connectsToLine, Northeast Corridor at New Haven]

A. New Haven Line
The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
B. New Haven–Springfield Line
The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
C. 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.
D. Naugatuck station
Naugatuck station is a commuter rail stop in Naugatuck, Connecticut, served by Metro-North Railroad trains on the Waterbury Branch.
E. Connecticut River Line
The Connecticut River Line is a historic railroad corridor running along the Connecticut River in New England, long used for passenger and freight service connecting communities in Massachusetts, Vermont, and New Hampshire.
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: Northeast Corridor at New Haven
Triple: [New Haven–Springfield Line, connectsToLine, Northeast Corridor at New Haven]

Generated description

The Northeast Corridor at New Haven is a major junction on the busy Boston–Washington rail corridor where intercity and regional trains connect with inland routes such as the New Haven–Springfield Line.

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

Target entity: Northeast Corridor at New Haven
Target entity description: The Northeast Corridor at New Haven is a major junction on the busy Boston–Washington rail corridor where intercity and regional trains connect with inland routes such as the New Haven–Springfield Line.

A. New Haven Line
The New Haven Line is a major commuter rail route in the northeastern United States that connects New York City with New Haven, Connecticut, serving numerous communities along the Long Island Sound corridor.
B. New Haven–Springfield Line
The New Haven–Springfield Line is a key passenger rail corridor in the northeastern United States connecting New Haven, Connecticut, with Springfield, Massachusetts, and serving both intercity and commuter rail services.
C. 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.
D. Naugatuck station
Naugatuck station is a commuter rail stop in Naugatuck, Connecticut, served by Metro-North Railroad trains on the Waterbury Branch.
E. Connecticut River Line
The Connecticut River Line is a historic railroad corridor running along the Connecticut River in New England, long used for passenger and freight service connecting communities in Massachusetts, Vermont, and New Hampshire.
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_69c008742a5c8190b9cb9c2787a3d8b3`	completed	March 22, 2026, 3:19 p.m.
NER	Named-entity recognition	`batch_69c04fbf048081908b0da0cf838730a5`	completed	March 22, 2026, 8:23 p.m.
NED1	Entity disambiguation (via context triple)	`batch_69c11371ceb88190b0c2d4218ed0327a`	completed	March 23, 2026, 10:18 a.m.
NEDg	Description generation	`batch_69c11400ddf08190b99943ada6ff2703`	completed	March 23, 2026, 10:20 a.m.
NED2	Entity disambiguation (via description)	`batch_69c1147e55fc81909225e1fe9e3eeec4`	completed	March 23, 2026, 10:22 a.m.

Created at: March 22, 2026, 4:07 p.m.