Triple

T2211419

Position	Surface form	Disambiguated ID	Type / Status
Subject	Hudson River tunnels	`E50924`	entity
Predicate	associatedProject	`P14971`	FINISHED
Object	New York Tunnel Extension of the Pennsylvania Railroad The New York Tunnel Extension of the Pennsylvania Railroad was an early 20th-century rail project that brought the Pennsylvania Railroad directly into Manhattan via new tunnels under the Hudson and East Rivers and the construction of Pennsylvania Station.	`E50924`	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 York Tunnel Extension of the Pennsylvania Railroad | Statement: [Hudson River tunnels, associatedProject, New York Tunnel Extension of the Pennsylvania Railroad]

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

Target entity: New York Tunnel Extension of the Pennsylvania Railroad
Context triple: [Hudson River tunnels, associatedProject, New York Tunnel Extension of the Pennsylvania Railroad]

A. New York City Water Tunnel No. 2
New York City Water Tunnel No. 2 is a major underground aqueduct that transports drinking water from upstate reservoirs to the city as part of its extensive water distribution network.
B. New York City Water Tunnel No. 3
New York City Water Tunnel No. 3 is a massive, long-term infrastructure project designed to modernize and provide redundancy to New York City’s drinking water distribution network.
C. Hudson River tunnels
The Hudson River tunnels are a pair of early 20th-century rail tunnels beneath the Hudson River that carry Amtrak and NJ Transit trains between New Jersey and New York City’s Penn Station.
D. New York City Water Tunnel No. 1
New York City Water Tunnel No. 1 is a major underground aqueduct that transports drinking water from upstate reservoirs to New York City.
E. Hugh L. Carey Tunnel
The Hugh L. Carey Tunnel is a major vehicular tunnel in New York City that connects Lower Manhattan to Brooklyn beneath New York Harbor.
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 York Tunnel Extension of the Pennsylvania Railroad
Triple: [Hudson River tunnels, associatedProject, New York Tunnel Extension of the Pennsylvania Railroad]

Generated description

The New York Tunnel Extension of the Pennsylvania Railroad was an early 20th-century rail project that brought the Pennsylvania Railroad directly into Manhattan via new tunnels under the Hudson and East Rivers and the construction of Pennsylvania Station.

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

Target entity: New York Tunnel Extension of the Pennsylvania Railroad
Target entity description: The New York Tunnel Extension of the Pennsylvania Railroad was an early 20th-century rail project that brought the Pennsylvania Railroad directly into Manhattan via new tunnels under the Hudson and East Rivers and the construction of Pennsylvania Station.

A. New York City Water Tunnel No. 2
New York City Water Tunnel No. 2 is a major underground aqueduct that transports drinking water from upstate reservoirs to the city as part of its extensive water distribution network.
B. New York City Water Tunnel No. 3
New York City Water Tunnel No. 3 is a massive, long-term infrastructure project designed to modernize and provide redundancy to New York City’s drinking water distribution network.
C. Hudson River tunnels chosen
The Hudson River tunnels are a pair of early 20th-century rail tunnels beneath the Hudson River that carry Amtrak and NJ Transit trains between New Jersey and New York City’s Penn Station.
D. New York City Water Tunnel No. 1
New York City Water Tunnel No. 1 is a major underground aqueduct that transports drinking water from upstate reservoirs to New York City.
E. Hugh L. Carey Tunnel
The Hugh L. Carey Tunnel is a major vehicular tunnel in New York City that connects Lower Manhattan to Brooklyn beneath New York Harbor.
F. None of above.

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_69a88b06709c8190978fb2418470d1b6`	completed	March 4, 2026, 7:41 p.m.
NER	Named-entity recognition	`batch_69abbfeb889081908cddf58a57b216df`	completed	March 7, 2026, 6:04 a.m.
NED1	Entity disambiguation (via context triple)	`batch_69ae655045d081909b8294ec706e0814`	completed	March 9, 2026, 6:14 a.m.
NEDg	Description generation	`batch_69ae662f689881908ecd76952b78f863`	completed	March 9, 2026, 6:18 a.m.
NED2	Entity disambiguation (via description)	`batch_69ae668ef8bc819085ed1c83f447d396`	completed	March 9, 2026, 6:19 a.m.

Created at: March 4, 2026, 7:46 p.m.