Iddefjord
E54041
Iddefjord is a narrow fjord forming part of the border between Norway and Sweden, known for its scenic landscapes and proximity to the town of Halden.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Iddefjord canonical | 13 |
| Iddefjord system | 2 |
| Iddefjord basin | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T400808 — 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: Iddefjord Context triple: [Halden, locatedOn, Iddefjord]
-
A.
Oslofjord
Oslofjord is a large inlet in southeastern Norway known for its islands, coastal towns, and role as the maritime gateway to Oslo.
-
B.
Jøssingfjord
Jøssingfjord is a narrow fjord on the southwestern coast of Norway, historically notable as the site of the 1940 Altmark Incident during World War II.
-
C.
Kattegat
Kattegat is a shallow sea area and strait between Denmark and Sweden that forms a key maritime passage linking the North Sea with the Baltic Sea.
-
D.
Egegik
Egegik is a dialect of the Central Alaskan Yup’ik language traditionally spoken in the Egegik region of southwestern Alaska.
-
E.
Savo Sound
Savo Sound is an area of ocean off Guadalcanal in the Solomon Islands that became infamous as a major naval battleground during World War II.
- 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: Iddefjord Target entity description: Iddefjord is a narrow fjord forming part of the border between Norway and Sweden, known for its scenic landscapes and proximity to the town of Halden.
-
A.
Oslofjord
Oslofjord is a large inlet in southeastern Norway known for its islands, coastal towns, and role as the maritime gateway to Oslo.
-
B.
Jøssingfjord
Jøssingfjord is a narrow fjord on the southwestern coast of Norway, historically notable as the site of the 1940 Altmark Incident during World War II.
-
C.
Kattegat
Kattegat is a shallow sea area and strait between Denmark and Sweden that forms a key maritime passage linking the North Sea with the Baltic Sea.
-
D.
Egegik
Egegik is a dialect of the Central Alaskan Yup’ik language traditionally spoken in the Egegik region of southwestern Alaska.
-
E.
Savo Sound
Savo Sound is an area of ocean off Guadalcanal in the Solomon Islands that became infamous as a major naval battleground during World War II.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf | fjord ⓘ |
| adjacentTo | Halden ⓘ |
| borderFeatureOf |
Norway
ⓘ
Sweden ⓘ |
| connectedTo | Skagerrak ⓘ |
| country |
Norway
ⓘ
Sweden ⓘ |
| formsBorderBetween |
Norway
ⓘ
Sweden ⓘ |
| hasPart | Ringdalsfjord ⓘ |
| knownFor |
narrow shape
ⓘ
scenic landscapes ⓘ |
| languageOfName |
Norwegian language
ⓘ
surface form:
Norwegian
Swedish ⓘ |
| locatedIn |
Bohuslän
ⓘ
Scandinavia ⓘ Viken county ⓘ Østfold ⓘ
surface form:
Østfold region
|
| locatedInRegion | Østfold og Follo district court jurisdiction ⓘ |
| locatedNear | Svinesund ⓘ |
| mouthLocatedIn | Skagerrak ⓘ |
| near | Halden ⓘ |
| partOf |
Norwegian–Swedish border
ⓘ
surface form:
Norwegian-Swedish border
outer Oslofjord region ⓘ |
| separates | Halden municipality and Swedish Bohuslän coast ⓘ |
| usedFor |
boating
ⓘ
fishing ⓘ recreation ⓘ |
| watercourseType | coastal fjord ⓘ |
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: Iddefjord Description of subject: Iddefjord is a narrow fjord forming part of the border between Norway and Sweden, known for its scenic landscapes and proximity to the town of Halden.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Halden
subject surface form:
Haldenvassdraget
subject surface form:
Haldenvassdraget
this entity surface form:
Iddefjord basin
this entity surface form:
Iddefjord system
this entity surface form:
Iddefjord system