Great Belt Tunnel
E687675
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Great Belt Tunnel canonical | 2 |
| Great Belt Fixed Link | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7591496 — 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: Great Belt Tunnel Context triple: [Great Belt Bridge, adjacentStructure, Great Belt Tunnel]
-
A.
Great Belt Bridge
The Great Belt Bridge is a major Danish suspension bridge that forms part of the Great Belt Fixed Link, connecting the islands of Funen and Zealand across the Great Belt strait.
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B.
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.
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C.
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.
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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.
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E.
Hålogaland Bridge
Hålogaland Bridge is a major suspension bridge in northern Norway, notable as one of the country’s longest and most striking fjord crossings.
- 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: Great Belt Tunnel Target entity description: 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.
-
A.
Great Belt Bridge
The Great Belt Bridge is a major Danish suspension bridge that forms part of the Great Belt Fixed Link, connecting the islands of Funen and Zealand across the Great Belt strait.
-
B.
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.
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C.
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.
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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.
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E.
Hålogaland Bridge
Hålogaland Bridge is a major suspension bridge in northern Norway, notable as one of the country’s longest and most striking fjord crossings.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
railway tunnel
ⓘ
undersea tunnel ⓘ |
| connects |
Funen
NERFINISHED
ⓘ
Zealand NERFINISHED ⓘ eastern Denmark ⓘ western Denmark ⓘ |
| constructionMethod |
bored tunnel
ⓘ
immersed tube tunnel ⓘ |
| constructionStart | 1988 ⓘ |
| country | Denmark ⓘ |
| crosses | Great Belt strait NERFINISHED ⓘ |
| DanishName | Storebæltstunnelen NERFINISHED ⓘ |
| electrification | 25 kV AC overhead line ⓘ |
| endPoint | Sprogø NERFINISHED ⓘ |
| gauge | standard gauge ⓘ |
| hasMaximumSpeed | up to 180 km/h for passenger trains ⓘ |
| hasPart |
service tunnel
ⓘ
two single-track rail tubes ⓘ |
| isBelow | sea bed ⓘ |
| isPartOfRoute |
Copenhagen–Aarhus railway connection
NERFINISHED
ⓘ
Copenhagen–Odense railway line NERFINISHED ⓘ |
| languageOfName | Danish ⓘ |
| length | approximately 8 kilometers ⓘ |
| locatedIn |
Baltic Sea
ⓘ
Great Belt NERFINISHED ⓘ between Zealand and Sprogø ⓘ |
| openingDate | 1997 ⓘ |
| operator | Banedanmark NERFINISHED ⓘ |
| owner | Sund & Bælt Holding A/S NERFINISHED ⓘ |
| partOf |
Great Belt Fixed Link
NERFINISHED
ⓘ
Scandinavian–European transport corridor NERFINISHED ⓘ railway connection between Zealand and Funen ⓘ |
| replaced | ferry services across the Great Belt for rail traffic ⓘ |
| safetyFeature |
cross passages between tubes
ⓘ
emergency exits ⓘ ventilation system ⓘ |
| significance | major fixed link between eastern and western Denmark ⓘ |
| startPoint | Zealand NERFINISHED ⓘ |
| 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: Great Belt Tunnel Description of subject: 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.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Great Belt Fixed Link