Svartholm Sea Fortress
E1007082
Svartholm Sea Fortress is an 18th-century Swedish-built coastal stronghold located on an island off Loviisa, Finland, constructed as part of the country’s historical maritime defenses.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Svartholm Sea Fortress canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12846962 — 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: Svartholm Sea Fortress Context triple: [Loviisa, hasLandmark, Svartholm Sea Fortress]
-
A.
Kongsvinger Fortress
Kongsvinger Fortress is a historic hilltop stronghold in Kongsvinger, Norway, built in the 17th century to guard the Glomma River and the Swedish border.
-
B.
Oscarsborg Fortress
Oscarsborg Fortress is a historic coastal defense fortification in Norway, best known for its role in sinking the German cruiser Blücher during the German invasion of 1940.
-
C.
Vaxholm Fortress
Vaxholm Fortress is a historic coastal stronghold in the Stockholm archipelago of Sweden, built to defend the approach to the capital and now serving as a museum and cultural attraction.
-
D.
Vardøhus Fortress
Vardøhus Fortress is a historic Norwegian coastal fortification in the Arctic town of Vardø, known as one of the world’s northernmost stone fortresses and a symbol of Norway’s sovereignty in the far northeast.
-
E.
Kristiansten Fortress
Kristiansten Fortress is a historic hilltop fortification in Trondheim, Norway, built in the 17th century to protect the city and now serving as a prominent tourist attraction with panoramic views.
- 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: Svartholm Sea Fortress Target entity description: Svartholm Sea Fortress is an 18th-century Swedish-built coastal stronghold located on an island off Loviisa, Finland, constructed as part of the country’s historical maritime defenses.
-
A.
Kongsvinger Fortress
Kongsvinger Fortress is a historic hilltop stronghold in Kongsvinger, Norway, built in the 17th century to guard the Glomma River and the Swedish border.
-
B.
Oscarsborg Fortress
Oscarsborg Fortress is a historic coastal defense fortification in Norway, best known for its role in sinking the German cruiser Blücher during the German invasion of 1940.
-
C.
Vaxholm Fortress
Vaxholm Fortress is a historic coastal stronghold in the Stockholm archipelago of Sweden, built to defend the approach to the capital and now serving as a museum and cultural attraction.
-
D.
Vardøhus Fortress
Vardøhus Fortress is a historic Norwegian coastal fortification in the Arctic town of Vardø, known as one of the world’s northernmost stone fortresses and a symbol of Norway’s sovereignty in the far northeast.
-
E.
Kristiansten Fortress
Kristiansten Fortress is a historic hilltop fortification in Trondheim, Norway, built in the 17th century to protect the city and now serving as a prominent tourist attraction with panoramic views.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
coastal fortification
ⓘ
historical monument ⓘ sea fortress ⓘ |
| architect |
Augustin Ehrensvärd
NERFINISHED
ⓘ
Axel Löwen NERFINISHED ⓘ |
| architecturalStyle | bastion fortress ⓘ |
| builtBy | Kingdom of Sweden NERFINISHED ⓘ |
| capturedBy | Russian Empire NERFINISHED ⓘ |
| capturedIn | 1808 ⓘ |
| category |
18th-century fortifications in Europe
ⓘ
Coastal fortifications in Finland ⓘ Forts in Finland ⓘ |
| conflict | Finnish War NERFINISHED ⓘ |
| constructionStart | 1748 ⓘ |
| coordinateLocation | 60.4333° N, 26.2333° E ⓘ |
| country | Finland ⓘ |
| era | 18th century ⓘ |
| garrisonedBy |
Russian Empire
NERFINISHED
ⓘ
Swedish Army NERFINISHED ⓘ |
| hasFeature |
bastions
ⓘ
casemates ⓘ harbor ⓘ ramparts ⓘ |
| hasTransport | boat connection from Loviisa ⓘ |
| heritageDesignation | protected cultural heritage site of Finland ⓘ |
| languageOfName | Swedish ⓘ |
| locatedIn |
Gulf of Finland
NERFINISHED
ⓘ
Loviisa NERFINISHED ⓘ |
| locatedOn | island ⓘ |
| material |
brick
ⓘ
stone ⓘ |
| namedAfter | Svartholm island NERFINISHED ⓘ |
| nearbyCity | Loviisa NERFINISHED ⓘ |
| openToPublic | yes ⓘ |
| operator | Finnish Heritage Agency NERFINISHED ⓘ |
| owner | Republic of Finland NERFINISHED ⓘ |
| partOf |
Swedish maritime defenses in the Gulf of Finland
ⓘ
defensive system of Sveaborg and Svartholm ⓘ |
| purpose |
coastal defense
ⓘ
protection of sea routes to Loviisa ⓘ |
| region | Uusimaa NERFINISHED ⓘ |
| restoration |
20th century
ⓘ
21st century ⓘ |
| seasonalAccess | summer ⓘ |
| status | ruin ⓘ |
| touristAttraction | yes ⓘ |
| waterBody | Baltic Sea NERFINISHED ⓘ |
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: Svartholm Sea Fortress Description of subject: Svartholm Sea Fortress is an 18th-century Swedish-built coastal stronghold located on an island off Loviisa, Finland, constructed as part of the country’s historical maritime defenses.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.