San Antonio River Tunnel
E596702
The San Antonio River Tunnel is a major flood-control tunnel in San Antonio, Texas, designed to divert excess river water and protect the downtown and River Walk areas from flooding.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Antonio River Tunnel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6489524 — 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: San Antonio River Tunnel Context triple: [San Antonio River, hasStructure, San Antonio River Tunnel]
-
A.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
B.
Eisenhower–Johnson Memorial Tunnel
The Eisenhower–Johnson Memorial Tunnel is a high-altitude vehicular tunnel through the Rocky Mountains in Colorado, carrying Interstate 70 beneath the Continental Divide.
-
C.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
D.
Tehachapi Crossing tunnels
The Tehachapi Crossing tunnels are a series of large water conveyance tunnels that carry California Aqueduct flows beneath the Tehachapi Mountains as part of the State Water Project.
-
E.
Baltimore Harbor Tunnel
The Baltimore Harbor Tunnel is a vehicular tunnel in Baltimore, Maryland, that carries Interstate 895 beneath the harbor as a major route for traffic bypassing downtown.
- 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: San Antonio River Tunnel Target entity description: The San Antonio River Tunnel is a major flood-control tunnel in San Antonio, Texas, designed to divert excess river water and protect the downtown and River Walk areas from flooding.
-
A.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
B.
Eisenhower–Johnson Memorial Tunnel
The Eisenhower–Johnson Memorial Tunnel is a high-altitude vehicular tunnel through the Rocky Mountains in Colorado, carrying Interstate 70 beneath the Continental Divide.
-
C.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
D.
Tehachapi Crossing tunnels
The Tehachapi Crossing tunnels are a series of large water conveyance tunnels that carry California Aqueduct flows beneath the Tehachapi Mountains as part of the State Water Project.
-
E.
Baltimore Harbor Tunnel
The Baltimore Harbor Tunnel is a vehicular tunnel in Baltimore, Maryland, that carries Interstate 895 beneath the harbor as a major route for traffic bypassing downtown.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
civil engineering structure
ⓘ
flood control tunnel ⓘ |
| category |
Flood control in the United States
ⓘ
Infrastructure in San Antonio, Texas ⓘ Tunnels in Texas ⓘ |
| connectsTo |
San Antonio River downstream of downtown
ⓘ
San Antonio River upstream of downtown ⓘ |
| constructionStart | 1990s ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| designFeature |
bypass channel for high river flows
ⓘ
underground tunnel ⓘ |
| function |
diverts water around the downtown river bend
ⓘ
reduces flood risk in central San Antonio ⓘ |
| hasImpact |
mitigation of flood damage
ⓘ
protection of tourism areas along the river ⓘ |
| infrastructureType | stormwater management infrastructure ⓘ |
| locatedIn |
Bexar County, Texas
ⓘ
linked to:
Bexar County
San Antonio, Texas ⓘ Texas ⓘ |
| locatedNear |
San Antonio River Walk
ⓘ
San Antonio central business district ⓘ
linked to:
Downtown San Antonio, Texas
|
| operator | San Antonio River Authority ⓘ |
| owner |
City of San Antonio
ⓘ
linked to:
San Antonio, Texas
|
| partOf |
San Antonio River flood control system
ⓘ
linked to:
San Antonio river improvement project
|
| protects |
Downtown San Antonio
ⓘ
linked to:
downtown San Antonio
San Antonio River Walk ⓘ |
| purpose |
diversion of excess river water
ⓘ
flood control ⓘ protection of downtown San Antonio from flooding ⓘ protection of the San Antonio River Walk from flooding ⓘ |
| river | San Antonio River ⓘ |
| status | operational ⓘ |
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: San Antonio River Tunnel Description of subject: The San Antonio River Tunnel is a major flood-control tunnel in San Antonio, Texas, designed to divert excess river water and protect the downtown and River Walk areas from flooding.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.