Lærdal Tunnel
E421020
The Lærdal Tunnel is a 24.5-kilometer road tunnel in Norway, renowned as one of the world's longest road tunnels and a key link between Oslo and Bergen.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lærdal Tunnel canonical | 4 |
| Lærdalstunnelen | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4219222 — 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: Lærdal Tunnel Context triple: [European route E16, includesStructure, Lærdal Tunnel]
-
A.
Tromsøysund Tunnel
Tromsøysund Tunnel is an undersea road tunnel in northern Norway that connects the island city of Tromsø to the mainland.
-
B.
Finnøy Tunnel
The Finnøy Tunnel is an undersea road tunnel in Norway that connects the island of Finnøy to the mainland road network.
-
C.
Bømlafjord Tunnel
Bømlafjord Tunnel is a subsea road tunnel in Vestland county, Norway, forming part of the fixed link connection between the island municipality of Bømlo and the mainland.
-
D.
Jøssingfjord road tunnel
The Jøssingfjord road tunnel is a Norwegian roadway tunnel carved into the steep cliffs along Jøssingfjord, providing a dramatic coastal driving route in Rogaland county.
-
E.
Velsertunnel
The Velsertunnel is a major road and rail tunnel in the Netherlands that runs beneath the North Sea Canal near Velsen, providing a key connection between the regions north and south of the canal.
- 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: Lærdal Tunnel Target entity description: The Lærdal Tunnel is a 24.5-kilometer road tunnel in Norway, renowned as one of the world's longest road tunnels and a key link between Oslo and Bergen.
-
A.
Tromsøysund Tunnel
Tromsøysund Tunnel is an undersea road tunnel in northern Norway that connects the island city of Tromsø to the mainland.
-
B.
Finnøy Tunnel
The Finnøy Tunnel is an undersea road tunnel in Norway that connects the island of Finnøy to the mainland road network.
-
C.
Bømlafjord Tunnel
Bømlafjord Tunnel is a subsea road tunnel in Vestland county, Norway, forming part of the fixed link connection between the island municipality of Bømlo and the mainland.
-
D.
Jøssingfjord road tunnel
The Jøssingfjord road tunnel is a Norwegian roadway tunnel carved into the steep cliffs along Jøssingfjord, providing a dramatic coastal driving route in Rogaland county.
-
E.
Velsertunnel
The Velsertunnel is a major road and rail tunnel in the Netherlands that runs beneath the North Sea Canal near Velsen, providing a key connection between the regions north and south of the canal.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
road tunnel
ⓘ
tunnel ⓘ |
| builtBy | Norwegian Public Roads Administration ⓘ |
| connects |
Aurland
ⓘ
Lærdal NERFINISHED ⓘ Oslo–Bergen road link ⓘ |
| constructionEndDate | 2000 ⓘ |
| constructionMethod | drill and blast ⓘ |
| constructionStartDate | 1995-03-15 ⓘ |
| country | Norway ⓘ |
| hasAirQualityMonitoring | yes ⓘ |
| hasColoredLightingInCaverns | yes ⓘ |
| hasEmergencyExits | yes ⓘ |
| hasEmergencyLay-bys | yes ⓘ |
| hasEmergencyPhones | yes ⓘ |
| hasFireExtinguishers | yes ⓘ |
| hasLighting | yes ⓘ |
| hasMaximumSpeedLimit | 80 km/h ⓘ |
| hasMobilePhoneCoverage | partial ⓘ |
| hasNumberOfLanes | 2 ⓘ |
| hasOfficialNameInNorwegian |
Lærdal Tunnel
self-linksurface differs
ⓘ
surface form:
Lærdalstunnelen
|
| hasRadioRebroadcasting | yes ⓘ |
| hasRestCaverns | yes ⓘ |
| hasRoadSurface | asphalt ⓘ |
| hasTrafficDirection | bidirectional ⓘ |
| hasVentilationSystem | yes ⓘ |
| isPartOf | main road connection between Oslo and Bergen ⓘ |
| isTollRoad | no ⓘ |
| length |
24,509 metres
ⓘ
24.5 kilometres ⓘ |
| locatedIn |
Aurland Municipality
NERFINISHED
ⓘ
Lærdal Municipality NERFINISHED ⓘ Vestland county NERFINISHED ⓘ |
| locatedInRegion | Western Norway NERFINISHED ⓘ |
| notableFor |
being one of the longest road tunnels in the world
ⓘ
special lighting design to reduce driver fatigue ⓘ |
| numberOfRestCaverns | 3 ⓘ |
| openedBy |
Harald V of Norway
ⓘ
surface form:
King Harald V of Norway
|
| openingDate | 2000-11-27 ⓘ |
| operator | Norwegian Public Roads Administration NERFINISHED ⓘ |
| owner | Norwegian Public Roads Administration ONNED1 ⓘ |
| partOf | European route E16 ⓘ |
| passesThrough | mountains between Aurland and Lærdal ⓘ |
| purpose |
improve road connection between Oslo and Bergen
ⓘ
provide winter-safe road link between eastern and western Norway ⓘ |
| rankedAmong | world's longest road tunnels ⓘ |
| roadNumber | E16 ⓘ |
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: Lærdal Tunnel Description of subject: The Lærdal Tunnel is a 24.5-kilometer road tunnel in Norway, renowned as one of the world's longest road tunnels and a key link between Oslo and Bergen.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lærdalstunnelen