Tunnel No. 1
E207915
Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tunnel No. 1 canonical | 1 |
| Water Tunnel 1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1857497 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tunnel No. 1 Context triple: [New York City distribution tunnels, hasComponent, Tunnel No. 1]
-
A.
Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
-
B.
First Coen Tunnel
The First Coen Tunnel is the original road tunnel under the North Sea Canal in Amsterdam, forming a key part of the city's ring road and an important traffic artery in the Netherlands.
-
C.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
D.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
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E.
Wawona Tunnel
Wawona Tunnel is a historic highway tunnel in Yosemite National Park that serves as the dramatic western gateway to the famous Tunnel View overlook of Yosemite Valley.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tunnel No. 1 Target entity description: Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
-
A.
Malinta Tunnel
Malinta Tunnel is a historic underground complex on Corregidor Island in the Philippines that served as a bomb-proof headquarters and hospital for American and Filipino forces during World War II.
-
B.
First Coen Tunnel
The First Coen Tunnel is the original road tunnel under the North Sea Canal in Amsterdam, forming a key part of the city's ring road and an important traffic artery in the Netherlands.
-
C.
Downtown Tunnel
The Downtown Tunnel is a major underwater vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
-
D.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
-
E.
Wawona Tunnel
Wawona Tunnel is a historic highway tunnel in Yosemite National Park that serves as the dramatic western gateway to the famous Tunnel View overlook of Yosemite Valley.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
civil engineering structure
ⓘ
infrastructure asset ⓘ water-supply tunnel ⓘ |
| constructionStart | early 20th century ⓘ |
| country | United States of America ⓘ |
| designDiscipline |
hydraulic engineering
ⓘ
tunnel engineering ⓘ |
| endPoint | boroughs of New York City (distribution network) ⓘ |
| function | convey water from upstate supply to city distribution mains ⓘ |
| hazardIfFailed | disruption of New York City water supply ⓘ |
| inService | yes ⓘ |
| locatedIn | New York City ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| medium | pressurized water flow ⓘ |
| operatedBy | New York City Department of Environmental Protection ⓘ |
| ownedBy |
City of New York
ⓘ
linked to:
New York City
|
| partOf |
New York City underground water distribution system
ⓘ
New York City water supply system ⓘ |
| regionServed |
Brooklyn
ⓘ
Manhattan ⓘ Queens ⓘ The Bronx ⓘ |
| securityClassification | critical infrastructure ⓘ |
| serves | New York City ⓘ |
| significance | major component of New York City water distribution ⓘ |
| startPoint |
Catskill and Delaware aqueduct system (general source region)
ⓘ
linked to:
Catskill–Delaware water supply system
|
| status | operational ⓘ |
| transportMedium | potable water ⓘ |
| underground | true ⓘ |
| use | municipal water distribution ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Tunnel No. 1 Description of subject: Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tunnel No. 1