Fehmarnbelt Tunnel
E783022
The Fehmarnbelt Tunnel is a planned immersed road and rail tunnel that will create a fixed link between Denmark and Germany across the Fehmarn Belt in the Baltic Sea.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Fehmarnbelt Tunnel canonical | 4 |
| Fehmarn Belt Fixed Link | 2 |
| Fehmarn Belt fixed link construction area | 1 |
| Fehmarnbelt Fixed Link | 1 |
| Fehmarnbelt Tunnel (planned) | 1 |
| Femern Tunnel | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9182658 — 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: Fehmarnbelt Tunnel Context triple: [Lolland, plannedInfrastructure, Fehmarnbelt Tunnel]
-
A.
Great Belt Tunnel
The Great Belt Tunnel is an undersea railway tunnel in Denmark that, together with the Great Belt Bridge, forms part of the fixed link connecting the islands of Zealand and Funen across the Great Belt strait.
-
B.
Øresund Line
The Øresund Line is an international railway route connecting Copenhagen in Denmark with Malmö in Sweden, forming a key part of the fixed link across the Øresund Strait.
-
C.
Øresund Bridge
The Øresund Bridge is a combined road and rail bridge–tunnel linking Denmark and Sweden across the Øresund strait, serving as a major transport corridor between Copenhagen and Malmö.
-
D.
Öland Bridge
Öland Bridge is a long road bridge in Sweden that spans the Kalmar Strait, linking the island of Öland with the mainland near the city of Kalmar.
-
E.
Elbe Tunnel (Hamburg)
The Elbe Tunnel in Hamburg is a major underwater road tunnel beneath the River Elbe that forms a key traffic artery connecting the northern and southern parts of the city.
- 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: Fehmarnbelt Tunnel Target entity description: The Fehmarnbelt Tunnel is a planned immersed road and rail tunnel that will create a fixed link between Denmark and Germany across the Fehmarn Belt in the Baltic Sea.
-
A.
Great Belt Tunnel
The Great Belt Tunnel is an undersea railway tunnel in Denmark that, together with the Great Belt Bridge, forms part of the fixed link connecting the islands of Zealand and Funen across the Great Belt strait.
-
B.
Øresund Line
The Øresund Line is an international railway route connecting Copenhagen in Denmark with Malmö in Sweden, forming a key part of the fixed link across the Øresund Strait.
-
C.
Øresund Bridge
The Øresund Bridge is a combined road and rail bridge–tunnel linking Denmark and Sweden across the Øresund strait, serving as a major transport corridor between Copenhagen and Malmö.
-
D.
Öland Bridge
Öland Bridge is a long road bridge in Sweden that spans the Kalmar Strait, linking the island of Öland with the mainland near the city of Kalmar.
-
E.
Elbe Tunnel (Hamburg)
The Elbe Tunnel in Hamburg is a major underwater road tunnel beneath the River Elbe that forms a key traffic artery connecting the northern and southern parts of the city.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
fixed link
ⓘ
immersed tunnel ⓘ infrastructure project ⓘ road–rail tunnel ⓘ |
| agreementSignedBy |
Government of Denmark
ⓘ
Government of Germany ⓘ
linked to:
Federal Government of Germany
|
| agreementYear | 2008 ⓘ |
| alsoKnownAs |
Fehmarn Belt Fixed Link
ⓘ
linked to:
Fehmarnbelt Tunnel
Femern Tunnel ⓘ
linked to:
Fehmarnbelt Tunnel
|
| connects |
Denmark
ⓘ
Fehmarn ⓘ Germany ⓘ Lolland ⓘ |
| constructionMethod | immersed tube ⓘ |
| constructionStart | 2021 ⓘ |
| country |
Denmark
ⓘ
Germany ⓘ |
| crosses | Fehmarn Belt ⓘ |
| endPoint | Puttgarden ⓘ |
| environmentalImpactAssessmentCompleted | yes ⓘ |
| estimatedCostInBillionEUR | over 7 ⓘ |
| fundingModel | user-financed ⓘ |
| hasComponent |
rail tunnel
ⓘ
road tunnel ⓘ |
| hasSpecialElement | service element ⓘ |
| hasToll | yes ⓘ |
| lengthInKilometres | about 18 ⓘ |
| lengthInMetres | about 18000 ⓘ |
| locatedIn |
Baltic Sea
ⓘ
Fehmarn Belt ⓘ |
| operator | Femern A/S ⓘ |
| ownedBy |
Danish Ministry of Transport
ⓘ
linked to:
Ministry of Transport of Denmark
|
| partOf |
Scandinavian–Mediterranean Corridor
ⓘ
Trans-European Transport Network ⓘ
linked to:
Trans-European transport network
|
| plannedOpening | 2029 ⓘ |
| purpose |
improve transport between Scandinavia and continental Europe
ⓘ
reduce travel time between Copenhagen and Hamburg ⓘ |
| railDesignSpeedKmPerHour | 200 ⓘ |
| railTracks | 2 ⓘ |
| railwayType | electrified double-track railway ⓘ |
| replaces |
Rødby–Puttgarden ferry
ⓘ
linked to:
Puttgarden–Rødby ferry
Vogelfluglinie ferry route ⓘ
linked to:
Vogelfluglinie
|
| roadDesignSpeedKmPerHour | 110 ⓘ |
| roadLanes | 4 ⓘ |
| startPoint | Rødbyhavn ⓘ |
| status | under construction ⓘ |
| tunnelElements | 79 ⓘ |
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: Fehmarnbelt Tunnel Description of subject: The Fehmarnbelt Tunnel is a planned immersed road and rail tunnel that will create a fixed link between Denmark and Germany across the Fehmarn Belt in the Baltic Sea.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Fehmarnbelt Tunnel
linked to: Fehmarnbelt Tunnel
linked to: Fehmarnbelt Tunnel
linked to: Fehmarnbelt Tunnel
linked to: Fehmarnbelt Tunnel
linked to: Fehmarnbelt Tunnel