Sutro Tunnel
E586490
The Sutro Tunnel is a historic drainage and access tunnel driven into Nevada’s Comstock Lode in the 19th century to improve mine safety and operations.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sutro Tunnel canonical | 3 |
| Sutro Tunnel Company | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6352168 — 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: Sutro Tunnel Context triple: [Sutro, associatedInfrastructure, Sutro Tunnel]
-
A.
Yerba Buena Tunnel
Yerba Buena Tunnel is a vehicular tunnel in the San Francisco Bay that carries the San Francisco–Oakland Bay Bridge through Yerba Buena Island, connecting its eastern and western spans.
-
B.
Carmel Tunnels
The Carmel Tunnels are a system of toll road tunnels in Haifa, Israel, that provide a fast east–west route beneath the Carmel mountain range to ease urban traffic congestion.
-
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.
Sunset Tunnel
Sunset Tunnel is a rail tunnel in San Francisco that carries Muni Metro light rail trains beneath the hilly terrain between the Duboce Triangle and Inner Sunset neighborhoods.
-
E.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
- 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: Sutro Tunnel Target entity description: The Sutro Tunnel is a historic drainage and access tunnel driven into Nevada’s Comstock Lode in the 19th century to improve mine safety and operations.
-
A.
Yerba Buena Tunnel
Yerba Buena Tunnel is a vehicular tunnel in the San Francisco Bay that carries the San Francisco–Oakland Bay Bridge through Yerba Buena Island, connecting its eastern and western spans.
-
B.
Carmel Tunnels
The Carmel Tunnels are a system of toll road tunnels in Haifa, Israel, that provide a fast east–west route beneath the Carmel mountain range to ease urban traffic congestion.
-
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.
Sunset Tunnel
Sunset Tunnel is a rail tunnel in San Francisco that carries Muni Metro light rail trains beneath the hilly terrain between the Duboce Triangle and Inner Sunset neighborhoods.
-
E.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic structure
ⓘ
mining tunnel ⓘ |
| associatedIndustry |
gold mining
ⓘ
silver mining ⓘ |
| associatedWith |
Adolph Sutro
ⓘ
Comstock Lode ⓘ
linked to:
Comstock Lode silver rush
Virginia City, Nevada ⓘ
linked to:
Virginia City, Nevada, United States
|
| connectsTo |
Comstock Lode mines
ⓘ
linked to:
Comstock Lode area
Virginia City, Nevada (mining district) ⓘ
linked to:
Virginia City, Nevada, United States
|
| constructionMethod | driven through solid rock ⓘ |
| constructionPeriod | 19th century ⓘ |
| constructionStartDate | 1869 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county | Lyon County, Nevada ⓘ |
| currentCondition | partially accessible historic tunnel ⓘ |
| engineeringDiscipline | mining engineering ⓘ |
| era |
American Old West
ⓘ
linked to:
Old West
|
| follows | Sutro Tunnel Company charter ⓘ |
| hasFunction |
draining water from Comstock Lode mines
ⓘ
providing alternative escape route for miners ⓘ providing fresh air to underground workings ⓘ |
| heritageStatus | historic site ⓘ |
| historicalSignificance |
improved safety in Comstock Lode mining operations
ⓘ
major 19th-century mining engineering project ⓘ |
| isPartOf |
Comstock Historic District (broadly)
ⓘ
linked to:
Comstock Historic District
|
| length | approximately 4 miles ⓘ |
| locatedIn |
Comstock Lode
ⓘ
linked to:
Comstock Lode area
Nevada ⓘ United States ⓘ
linked to:
United States of America
|
| namedAfter | Adolph Sutro ⓘ |
| nearestCity | Dayton, Nevada ⓘ |
| notableFor |
influencing mining safety practices on the Comstock Lode
ⓘ
large-scale underground drainage system ⓘ |
| openingDate | 1878 ⓘ |
| ownerHistory |
Sutro Tunnel Company
ⓘ
linked to:
Sutro Tunnel
|
| proposedBy | Adolph Sutro ⓘ |
| purpose |
improving mine safety
ⓘ
improving mining operations ⓘ mine access ⓘ mine drainage ⓘ mine ventilation ⓘ |
| riskAddressed |
limited escape routes for miners
ⓘ
mine flooding ⓘ poor ventilation in mines ⓘ |
| state | Nevada ⓘ |
| tourism | subject of heritage and preservation efforts ⓘ |
| transportUsed | rail cars for ore and waste rock ⓘ |
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: Sutro Tunnel Description of subject: The Sutro Tunnel is a historic drainage and access tunnel driven into Nevada’s Comstock Lode in the 19th century to improve mine safety and operations.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sutro Tunnel