Lange Anna sea stack
E306744
The Lange Anna sea stack is a towering red sandstone rock pillar off the German island of Helgoland, famous as a striking coastal landmark and seabird habitat in the North Sea.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lange Anna sea stack canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2888460 — 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: Lange Anna sea stack Context triple: [Helgoland, knownFor, Lange Anna sea stack]
-
A.
Haystack Rock
Haystack Rock is a prominent 235-foot sea stack and wildlife refuge off Cannon Beach, renowned as one of the most iconic natural landmarks on the Oregon Coast.
-
B.
Siwash Rock
Siwash Rock is a distinctive sea stack and natural landmark just off the seawall in Vancouver’s Stanley Park, often photographed for its lone tree growing from the top.
-
C.
Sibyl Rock
Sibyl Rock is a notable rock formation at the ancient sanctuary of Delphi in Greece, traditionally associated with the prophetic utterances of the Sibyl.
-
D.
Brace Rock
Brace Rock is a prominent coastal rock formation off Eastern Point in Gloucester, Massachusetts, known as a navigational landmark for local mariners.
-
E.
Cathedral Rocks
Cathedral Rocks are a prominent granite rock formation in Yosemite National Park, known for their striking spires that frame the western side of Yosemite Valley.
- 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: Lange Anna sea stack Target entity description: The Lange Anna sea stack is a towering red sandstone rock pillar off the German island of Helgoland, famous as a striking coastal landmark and seabird habitat in the North Sea.
-
A.
Haystack Rock
Haystack Rock is a prominent 235-foot sea stack and wildlife refuge off Cannon Beach, renowned as one of the most iconic natural landmarks on the Oregon Coast.
-
B.
Siwash Rock
Siwash Rock is a distinctive sea stack and natural landmark just off the seawall in Vancouver’s Stanley Park, often photographed for its lone tree growing from the top.
-
C.
Sibyl Rock
Sibyl Rock is a notable rock formation at the ancient sanctuary of Delphi in Greece, traditionally associated with the prophetic utterances of the Sibyl.
-
D.
Brace Rock
Brace Rock is a prominent coastal rock formation off Eastern Point in Gloucester, Massachusetts, known as a navigational landmark for local mariners.
-
E.
Cathedral Rocks
Cathedral Rocks are a prominent granite rock formation in Yosemite National Park, known for their striking spires that frame the western side of Yosemite Valley.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
landmark
ⓘ
rock formation ⓘ sea stack ⓘ |
| access | not accessible to the public ⓘ |
| approximateHeightInFeet | about 154 feet ⓘ |
| color | red ⓘ |
| conservationConcern | possible future collapse ⓘ |
| country | Germany ⓘ |
| elevation | about 47 metres ⓘ |
| formedBy |
marine erosion
ⓘ
wave action ⓘ |
| geologicalAge |
Mesozoic Era
ⓘ
surface form:
Mesozoic
|
| geologicalPeriod | Bunter sandstone ⓘ |
| hasAlternativeName |
Lange Anna sea stack
ⓘ
Tall Anna ⓘ |
| hasUse |
seabird breeding site
ⓘ
tourist attraction ⓘ |
| isHabitatFor |
common guillemot
ⓘ
kittiwake ⓘ northern gannet ⓘ razorbill ⓘ various seabirds ⓘ |
| isSubjectOf |
German tourism promotion
ⓘ
coastal geomorphology studies ⓘ |
| languageOfName | German ⓘ |
| locatedIn |
Helgoland
ⓘ
Helgoland ⓘ
surface form:
Heligoland archipelago
North Sea ⓘ Schleswig-Holstein ⓘ |
| locatedNear | main island of Helgoland ⓘ |
| locatedOffCoastOf | German Bight ⓘ |
| material | red sandstone ⓘ |
| nameMeaning | Long Anna ⓘ |
| nearbyFeature | Lummenfelsen bird cliffs ⓘ |
| nearbySettlement | Helgoland village ⓘ |
| notableFor |
dense seabird colonies
ⓘ
red sandstone coloration ⓘ striking vertical rock pillar shape ⓘ |
| partOf | Helgoland red sandstone cliffs ⓘ |
| protectedStatus | nature reserve area ⓘ |
| region |
North Sea coast of Schleswig-Holstein
ⓘ
surface form:
German North Sea coast
|
| risk |
coastal erosion
ⓘ
structural instability ⓘ |
| separatedFrom | main plateau of Helgoland ⓘ |
| tourismSignificance |
major symbol of Helgoland
ⓘ
popular photo motif ⓘ |
| viewingFrom | cliffs of Helgoland main island ⓘ |
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: Lange Anna sea stack Description of subject: The Lange Anna sea stack is a towering red sandstone rock pillar off the German island of Helgoland, famous as a striking coastal landmark and seabird habitat in the North Sea.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.