Tunnel No. 27 (Eel River Canyon)
E789375
Tunnel No. 27 (Eel River Canyon) is a railroad tunnel along California’s remote Eel River Canyon that once formed part of the Northwestern Pacific Railroad’s main line through the rugged North Coast region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Eel River Canyon route of the Northwestern Pacific Railroad | 1 |
| Tunnel No. 27 (Eel River Canyon) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9285538 — 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. 27 (Eel River Canyon) Context triple: [Northwestern Pacific Railroad, hasTunnel, Tunnel No. 27 (Eel River Canyon)]
-
A.
Tunnel No. 2
Tunnel No. 2 is one of New York City’s major water distribution tunnels that helps convey drinking water from upstate reservoirs to the city’s boroughs.
-
B.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
C.
Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
-
D.
Tunnel No. 1
Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
-
E.
Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
- 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. 27 (Eel River Canyon) Target entity description: Tunnel No. 27 (Eel River Canyon) is a railroad tunnel along California’s remote Eel River Canyon that once formed part of the Northwestern Pacific Railroad’s main line through the rugged North Coast region.
-
A.
Tunnel No. 2
Tunnel No. 2 is one of New York City’s major water distribution tunnels that helps convey drinking water from upstate reservoirs to the city’s boroughs.
-
B.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
C.
Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
-
D.
Tunnel No. 1
Tunnel No. 1 is a major water-supply tunnel that forms part of New York City’s underground distribution system.
-
E.
Anton Anderson Memorial Tunnel
The Anton Anderson Memorial Tunnel is a combined rail and highway tunnel in Alaska that provides the only road access to the town of Whittier through the Chugach Mountains.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
railroad tunnel
ⓘ
railway infrastructure ⓘ |
| associatedWith | Eel River Canyon landslides and washouts ⓘ |
| builtFor | steam-era railroad operations ⓘ |
| characterizedBy |
remote location
ⓘ
rugged terrain ⓘ |
| constructedFor | Northwestern Pacific Railroad main line operations ⓘ |
| hasRailGauge | standard gauge ⓘ |
| historicalUse | linking Eureka region to the rest of California rail network ⓘ |
| infrastructureType | single‑track tunnel ⓘ |
| locatedAlong | Eel River ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Eel River Canyon ⓘ Humboldt County, California ⓘ
linked to:
Humboldt County
United States ⓘ
linked to:
United States of America
|
| locatedInRegion | North Coast of California ⓘ |
| locatedInValley |
Eel River valley
ⓘ
linked to:
Eel River Basin
|
| locatedOn | Northwestern Pacific Railroad ⓘ |
| namedAfter | its sequence number on the Northwestern Pacific Railroad line ⓘ |
| partOf |
Eel River Canyon route of the Northwestern Pacific Railroad
ⓘ
linked to:
Tunnel No. 27 (Eel River Canyon)
Northwestern Pacific Railroad main line ⓘ
linked to:
Northwestern Pacific Railroad
rail corridor connecting the San Francisco Bay Area with Humboldt Bay ⓘ |
| usedBy |
freight trains
ⓘ
passenger trains ⓘ |
| usedFor | rail transport ⓘ |
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. 27 (Eel River Canyon) Description of subject: Tunnel No. 27 (Eel River Canyon) is a railroad tunnel along California’s remote Eel River Canyon that once formed part of the Northwestern Pacific Railroad’s main line through the rugged North Coast region.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Tunnel No. 27 (Eel River Canyon)
→
partOf
→
Eel River Canyon route of the Northwestern Pacific Railroad
ⓘ
linked to: Tunnel No. 27 (Eel River Canyon)