Anton Anderson Memorial Tunnel
E641268
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Anton Anderson Memorial Tunnel canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7070328 — 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: Anton Anderson Memorial Tunnel Context triple: [Portage Glacier, hasNearbyFeature, Anton Anderson Memorial Tunnel]
-
A.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
B.
Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
-
C.
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.
-
D.
Bopeep Tunnel
Bopeep Tunnel is a railway tunnel in East Sussex, England, carrying the Tonbridge–Hastings line through the coastal cliffs near St Leonards.
-
E.
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.
- 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: Anton Anderson Memorial Tunnel Target entity description: 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.
-
A.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
B.
Sumner Tunnel
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
-
C.
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.
-
D.
Bopeep Tunnel
Bopeep Tunnel is a railway tunnel in East Sussex, England, carrying the Tonbridge–Hastings line through the coastal cliffs near St Leonards.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
highway tunnel
ⓘ
railway tunnel ⓘ road–rail tunnel ⓘ transportation tunnel ⓘ |
| builtFor | military logistics during World War II ⓘ |
| carries |
Alaska Railroad
NERFINISHED
ⓘ
Alaska Route 1 NERFINISHED ⓘ |
| connects |
Portage, Alaska
NERFINISHED
ⓘ
Whittier, Alaska NERFINISHED ⓘ |
| constructionMethod | drill-and-blast tunneling ⓘ |
| hasFeature |
emergency pullouts
ⓘ
fire suppression systems ⓘ jet fan ventilation system ⓘ railroad-grade concrete roadway ⓘ |
| hasPortal |
Portage portal
ⓘ
Whittier portal NERFINISHED ⓘ |
| hasSafetyRestriction |
no hazardous materials
ⓘ
speed limits enforced ⓘ |
| hasSeason | year-round operation ⓘ |
| hasSignificance |
one of the longest highway tunnels in North America
ⓘ
only road access to Whittier, Alaska ⓘ |
| hasToll | yes ⓘ |
| hasTrafficControl |
one-way alternating traffic
ⓘ
signal-controlled portal access ⓘ |
| hasUsage |
rail traffic
ⓘ
tourist access to Whittier ⓘ vehicular traffic ⓘ |
| length |
approximately 2.5 miles
ⓘ
approximately 4.0 kilometers ⓘ |
| locatedIn |
Alaska
ⓘ
Chugach Mountains NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| namedAfter | Anton Anderson NERFINISHED ⓘ |
| near |
Portage Glacier
NERFINISHED
ⓘ
Turnagain Arm NERFINISHED ⓘ |
| openedToRailTraffic | 1943 ⓘ |
| openedToRoadTraffic | 2000 ⓘ |
| operator | Alaska Department of Transportation and Public Facilities NERFINISHED ⓘ |
| originalBuilder | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| owner | State of Alaska NERFINISHED ⓘ |
| partOf |
Alaska Railroad main line to Whittier
NERFINISHED
ⓘ
access route to Prince William Sound ⓘ |
| passesThrough | Maynard Mountain NERFINISHED ⓘ |
| providesRoadAccessTo | Whittier, Alaska NERFINISHED ⓘ |
| railTracks | single track ⓘ |
| roadLanes | single lane ⓘ |
| wasUpgradedFor | combined rail–road use ⓘ |
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: Anton Anderson Memorial Tunnel Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Whittier, Alaska