Tintagel Castle
E56973
Tintagel Castle is a medieval cliff-top fortress in Cornwall, England, famed for its dramatic coastal ruins and legendary association with King Arthur.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tintagel Castle canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T451343 — 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: Tintagel Castle Context triple: [English Heritage, manages, Tintagel Castle]
-
A.
Beaumaris Castle
Beaumaris Castle is a late 13th-century concentric medieval fortress on the Isle of Anglesey in Wales, renowned for its symmetrical design and status as part of the UNESCO-listed "Castles and Town Walls of King Edward in Gwynedd."
-
B.
Dolwyddelan Castle
Dolwyddelan Castle is a medieval Welsh fortress in Snowdonia, traditionally associated with the native prince Llywelyn the Great and commanding a strategic mountain pass.
-
C.
Ahlden Castle
Ahlden Castle is a historic German residence in Lower Saxony, best known as the long-term place of confinement of Sophia Dorothea of Celle, the repudiated wife of King George I of Great Britain.
-
D.
Harlech
Harlech is a historic coastal town in northwest Wales, best known for its dramatic medieval castle overlooking Cardigan Bay.
-
E.
Caernarfon Castle
Caernarfon Castle is a massive medieval fortress in Caernarfon, Wales, famed for its polygonal towers and role as a symbol of English rule over Wales.
- 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: Tintagel Castle Target entity description: Tintagel Castle is a medieval cliff-top fortress in Cornwall, England, famed for its dramatic coastal ruins and legendary association with King Arthur.
-
A.
Beaumaris Castle
Beaumaris Castle is a late 13th-century concentric medieval fortress on the Isle of Anglesey in Wales, renowned for its symmetrical design and status as part of the UNESCO-listed "Castles and Town Walls of King Edward in Gwynedd."
-
B.
Dolwyddelan Castle
Dolwyddelan Castle is a medieval Welsh fortress in Snowdonia, traditionally associated with the native prince Llywelyn the Great and commanding a strategic mountain pass.
-
C.
Ahlden Castle
Ahlden Castle is a historic German residence in Lower Saxony, best known as the long-term place of confinement of Sophia Dorothea of Celle, the repudiated wife of King George I of Great Britain.
-
D.
Harlech
Harlech is a historic coastal town in northwest Wales, best known for its dramatic medieval castle overlooking Cardigan Bay.
-
E.
Caernarfon Castle
Caernarfon Castle is a massive medieval fortress in Caernarfon, Wales, famed for its polygonal towers and role as a symbol of English rule over Wales.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
medieval castle ⓘ tourist attraction ⓘ |
| architecturalStyle | medieval fortress ⓘ |
| associatedWith |
Arthurian legend
ⓘ
Geoffrey of Monmouth (literary consolidation) ⓘ
surface form:
Geoffrey of Monmouth
King Arthur ⓘ |
| builtBy | Richard, 1st Earl of Cornwall ⓘ |
| category |
Arthurian locations
ⓘ
Castles in Cornwall ⓘ Ruined castles in England ⓘ |
| constructionEnd | c. 1240 ⓘ |
| constructionStart | c. 1230 ⓘ |
| country |
England
ⓘ
United Kingdom ⓘ |
| currentCondition | ruin ⓘ |
| elevation | clifftop above sea level ⓘ |
| governingBody | English Heritage ⓘ |
| hasArchaeologicalEvidenceOf |
early medieval settlement
ⓘ
late Roman activity ⓘ post-Roman trading site ⓘ |
| hasModernFeature | footbridge linking headland and mainland ⓘ |
| hasPart |
chapel ruins
ⓘ
cliff bridge ⓘ courtyard ruins ⓘ gatehouse ruins ⓘ lower ward ⓘ upper ward ⓘ |
| heritageDesignation |
Grade I listed building
ⓘ
Scheduled Monument ⓘ |
| knownFor |
association with King Arthur
ⓘ
clifftop location ⓘ dramatic coastal ruins ⓘ |
| locatedInProtectedArea | Cornwall Area of Outstanding Natural Beauty ⓘ |
| locatedOn |
Atlantic coast
ⓘ
surface form:
Atlantic Ocean coast
|
| location | Tintagel, Cornwall, England ⓘ |
| managedBy | English Heritage ⓘ |
| mentionedIn | Historia Regum Britanniae ⓘ |
| near |
Tintagel, Cornwall, England
ⓘ
surface form:
village of Tintagel
|
| nearestTown | Camelford ⓘ |
| openToPublic | yes ⓘ |
| overlooks |
Atlantic Ocean
ⓘ
Tintagel, Cornwall, England ⓘ
surface form:
Tintagel Haven
|
| partOf |
Duchy of Cornwall
ⓘ
surface form:
Duchy of Cornwall estates
|
| periodOfUse |
13th century
ⓘ
14th century ⓘ |
| region |
Cornwall
ⓘ
surface form:
North Cornwall
|
| touristVisitsPerYear | hundreds of thousands ⓘ |
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: Tintagel Castle Description of subject: Tintagel Castle is a medieval cliff-top fortress in Cornwall, England, famed for its dramatic coastal ruins and legendary association with King Arthur.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.