Eider-Sperrwerk
E806280
The Eider-Sperrwerk is a major storm surge barrier and lock complex in northern Germany that protects the low-lying Eider estuary and surrounding coastal areas from North Sea flooding.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eider-Sperrwerk canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9495354 — 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: Eider-Sperrwerk Context triple: [Eider, hasStructure, Eider-Sperrwerk]
-
A.
Sorpe Dam
The Sorpe Dam is a German earth-fill dam in the Ruhr region that was a key target of the RAF’s World War II “Dambusters” raid, Operation Chastise.
-
B.
Bütgenbach Dam
Bütgenbach Dam is a hydroelectric and flood-control structure in eastern Belgium that creates Lake Bütgenbach, a popular site for recreation and water sports.
-
C.
Schluchsee Dam
Schluchsee Dam is a hydroelectric and water regulation dam in Germany’s Black Forest that creates the Schluchsee reservoir, a major regional lake and recreation area.
-
D.
Eder Dam
Eder Dam is a major German gravity dam in the Eder River valley, historically known for being one of the dams breached by the RAF’s “Dambusters” raid during World War II.
-
E.
Solina Dam
Solina Dam is a major hydroelectric and flood-control dam in southeastern Poland, known for creating the large artificial Solina Lake in the Bieszczady region.
- 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: Eider-Sperrwerk Target entity description: The Eider-Sperrwerk is a major storm surge barrier and lock complex in northern Germany that protects the low-lying Eider estuary and surrounding coastal areas from North Sea flooding.
-
A.
Sorpe Dam
The Sorpe Dam is a German earth-fill dam in the Ruhr region that was a key target of the RAF’s World War II “Dambusters” raid, Operation Chastise.
-
B.
Bütgenbach Dam
Bütgenbach Dam is a hydroelectric and flood-control structure in eastern Belgium that creates Lake Bütgenbach, a popular site for recreation and water sports.
-
C.
Schluchsee Dam
Schluchsee Dam is a hydroelectric and water regulation dam in Germany’s Black Forest that creates the Schluchsee reservoir, a major regional lake and recreation area.
-
D.
Eder Dam
Eder Dam is a major German gravity dam in the Eder River valley, historically known for being one of the dams breached by the RAF’s “Dambusters” raid during World War II.
-
E.
Solina Dam
Solina Dam is a major hydroelectric and flood-control dam in southeastern Poland, known for creating the large artificial Solina Lake in the Bieszczady region.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
hydraulic engineering structure
ⓘ
lock complex ⓘ storm surge barrier ⓘ |
| constructionMaterial |
concrete
ⓘ
steel ⓘ |
| constructionStart | 1967 ⓘ |
| coordinatesApprox | 54.33°N 8.78°E ⓘ |
| country | Germany NERFINISHED ⓘ |
| crosses | Eider estuary NERFINISHED ⓘ |
| designedToWithstand | extreme storm surges ⓘ |
| hasFunction |
navigation lock
ⓘ
storm surge protection ⓘ water level regulation ⓘ |
| hasNumberOfGates | 5 ⓘ |
| hasNumberOfLocks | 1 ⓘ |
| hasRoadCrossing | Bundesstraße 202 NERFINISHED ⓘ |
| hasTouristFacilities |
information center
ⓘ
viewing platforms ⓘ |
| hasTypeOfGate | segment gates ⓘ |
| inaugurationDate | 1973 ⓘ |
| length | about 4.9 km ⓘ |
| locatedIn | Schleswig-Holstein NERFINISHED ⓘ |
| locatedInDistrict | Nordfriesland NERFINISHED ⓘ |
| locatedInMunicipality | Katingsiel NERFINISHED ⓘ |
| locatedInRegion | northern Germany NERFINISHED ⓘ |
| locatedNear |
St. Peter-Ording
NERFINISHED
ⓘ
Tönning NERFINISHED ⓘ |
| locatedOnWaterbody |
Eider
NERFINISHED
ⓘ
North Sea NERFINISHED ⓘ |
| lockType | ship lock ⓘ |
| maintainedBy | Landesbetrieb für Küstenschutz, Nationalpark und Meeresschutz Schleswig-Holstein NERFINISHED ⓘ |
| nearProtectedArea | Schleswig-Holstein Wadden Sea National Park NERFINISHED ⓘ |
| opened | 1973 ⓘ |
| openedForShipping | via lock ⓘ |
| ownedBy | State of Schleswig-Holstein NERFINISHED ⓘ |
| partOf | coastal protection system of Schleswig-Holstein ⓘ |
| protectsArea |
Eider estuary
NERFINISHED
ⓘ
low-lying coastal areas along the Eider ⓘ |
| protectsFrom |
North Sea flooding
ⓘ
storm surges ⓘ |
| purpose |
flood protection
ⓘ
securing navigation on the Eider ⓘ |
| separates | outer Eider estuary from inner Eider ⓘ |
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: Eider-Sperrwerk Description of subject: The Eider-Sperrwerk is a major storm surge barrier and lock complex in northern Germany that protects the low-lying Eider estuary and surrounding coastal areas from North Sea flooding.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.