Karmøy Tunnel (T-forbindelsen)
E376447
Karmøy Tunnel (T-forbindelsen) is an undersea road tunnel in Rogaland county, Norway, that connects the island of Karmøy to the mainland as part of a major fixed-link transport project.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Karmøy Tunnel (T-forbindelsen) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3648653 — 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: Karmøy Tunnel (T-forbindelsen) Context triple: [Karmøy, hasTransport, Karmøy Tunnel (T-forbindelsen)]
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A.
Finnøy Tunnel
The Finnøy Tunnel is an undersea road tunnel in Norway that connects the island of Finnøy to the mainland road network.
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B.
Tromsøysund Tunnel
Tromsøysund Tunnel is an undersea road tunnel in northern Norway that connects the island city of Tromsø to the mainland.
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C.
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.
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D.
Maastunnel
Maastunnel is a historic traffic tunnel in Rotterdam, the Netherlands, carrying road, bicycle, and pedestrian traffic beneath the Nieuwe Maas river.
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E.
Piet Hein Tunnel
The Piet Hein Tunnel is a major road and tram tunnel in Amsterdam that connects the city center with the Eastern Docklands and the A10 ring road.
- 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: Karmøy Tunnel (T-forbindelsen) Target entity description: Karmøy Tunnel (T-forbindelsen) is an undersea road tunnel in Rogaland county, Norway, that connects the island of Karmøy to the mainland as part of a major fixed-link transport project.
-
A.
Finnøy Tunnel
The Finnøy Tunnel is an undersea road tunnel in Norway that connects the island of Finnøy to the mainland road network.
-
B.
Tromsøysund Tunnel
Tromsøysund Tunnel is an undersea road tunnel in northern Norway that connects the island city of Tromsø to the mainland.
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C.
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.
-
D.
Maastunnel
Maastunnel is a historic traffic tunnel in Rotterdam, the Netherlands, carrying road, bicycle, and pedestrian traffic beneath the Nieuwe Maas river.
-
E.
Piet Hein Tunnel
The Piet Hein Tunnel is a major road and tram tunnel in Amsterdam that connects the city center with the Eastern Docklands and the A10 ring road.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
road tunnel
ⓘ
subsea tunnel ⓘ undersea road tunnel ⓘ |
| connectsWith |
Haugesund
NERFINISHED
ⓘ
Karmøy NERFINISHED ⓘ Tysvær municipality via T-forbindelsen ⓘ mainland Norway ⓘ |
| constructionStartDate | 2008 ⓘ |
| country | Norway ⓘ |
| hasCategory |
Road tunnels in Norway
ⓘ
Subsea tunnels in Norway ⓘ Tunnels in Rogaland ⓘ |
| hasEmergencyExits | yes ⓘ |
| hasFunction | connects Karmøy island to mainland transport network ⓘ |
| hasLining | concrete and rock support ⓘ |
| hasNorwegianName | Karmøytunnelen ⓘ |
| hasNumberOfLanes | 2 ⓘ |
| hasNumberOfTubes | 2 ⓘ |
| hasProjectName | T-forbindelsen ⓘ |
| hasSpeedLimit | 80 km/h ⓘ |
| hasStructureType | rock tunnel ⓘ |
| hasTollCollection | automatic toll collection ⓘ |
| hasVentilationSystem | mechanical ventilation ⓘ |
| isPartOfTransportNetwork | fixed-link project T-forbindelsen ⓘ |
| length | approximately 8.5 kilometres ⓘ |
| lengthInMeters | approximately 8500 ⓘ |
| locatedInAdministrativeTerritorialEntity |
Haugesund municipality
NERFINISHED
ⓘ
Karmøy municipality NERFINISHED ⓘ Rogaland county NERFINISHED ⓘ |
| locatedInBodyOfWater | Karmsundet ⓘ |
| locatedInRegion | Western Norway ⓘ |
| maximumDepthBelowSeaLevel | approximately 139 metres ⓘ |
| openedToTraffic | 2013 ⓘ |
| openingDate | 2013 ⓘ |
| operator |
Norwegian Public Roads Administration
ⓘ
surface form:
Statens vegvesen
|
| owner | Norwegian Public Roads Administration ⓘ |
| partOf |
Norwegian national road network
ⓘ
T-forbindelsen ⓘ road connection between Karmøy and Haugesund ⓘ |
| roadNumber |
County Road 47
ⓘ
Fylkesvei 47 ⓘ |
| serves |
Haugesund region
ⓘ
Karmøy municipality NERFINISHED ⓘ |
| tollRoad | yes ⓘ |
| trafficType | motor vehicles ⓘ |
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: Karmøy Tunnel (T-forbindelsen) Description of subject: Karmøy Tunnel (T-forbindelsen) is an undersea road tunnel in Rogaland county, Norway, that connects the island of Karmøy to the mainland as part of a major fixed-link transport project.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.