Cob embankment
E855807
Cob embankment is a historic sea wall and causeway in Porthmadog, Wales, built to reclaim land from the sea and protect the town from flooding.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Cob embankment canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10313867 — 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: Cob embankment Context triple: [Porthmadog Harbour Station, hasViewOf, Cob embankment]
-
A.
Embankment
Embankment is a central London Underground station on the north bank of the River Thames, serving multiple lines and providing access to the Victoria Embankment and nearby attractions.
-
B.
Embankment
Embankment is a large-scale installation artwork by British sculptor Rachel Whiteread, consisting of stacked translucent resin casts of cardboard boxes that transform the interior of Tate Modern’s Turbine Hall into a monumental, maze-like landscape.
-
C.
Cawthorne Dike
Cawthorne Dike is a small watercourse in South Yorkshire, England, that serves as a minor tributary feeding into the River Dearne within its local drainage system.
-
D.
Snake Dike
Snake Dike is a classic, runout slab and dike rock climbing route on the southwest face of Half Dome in Yosemite National Park.
-
E.
Tawe Barrage
Tawe Barrage is a tidal barrage structure near the mouth of the River Tawe in Swansea, Wales, designed to create a stable water level for navigation, recreation, and waterfront development.
- 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: Cob embankment Target entity description: Cob embankment is a historic sea wall and causeway in Porthmadog, Wales, built to reclaim land from the sea and protect the town from flooding.
-
A.
Embankment
Embankment is a central London Underground station on the north bank of the River Thames, serving multiple lines and providing access to the Victoria Embankment and nearby attractions.
-
B.
Embankment
Embankment is a large-scale installation artwork by British sculptor Rachel Whiteread, consisting of stacked translucent resin casts of cardboard boxes that transform the interior of Tate Modern’s Turbine Hall into a monumental, maze-like landscape.
-
C.
Cawthorne Dike
Cawthorne Dike is a small watercourse in South Yorkshire, England, that serves as a minor tributary feeding into the River Dearne within its local drainage system.
-
D.
Snake Dike
Snake Dike is a classic, runout slab and dike rock climbing route on the southwest face of Half Dome in Yosemite National Park.
-
E.
Tawe Barrage
Tawe Barrage is a tidal barrage structure near the mouth of the River Tawe in Swansea, Wales, designed to create a stable water level for navigation, recreation, and waterfront development.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
causeway
ⓘ
sea wall ⓘ |
| associatedWith | Porthmadog harbour NERFINISHED ⓘ |
| builtFor | reclaiming land from the sea ⓘ |
| country |
United Kingdom
ⓘ
Wales ⓘ |
| crosses | Glaslyn estuary NERFINISHED ⓘ |
| enables | development of Porthmadog ⓘ |
| environment | tidal estuary ⓘ |
| hasFunction |
causeway
ⓘ
embankment ⓘ sea wall ⓘ |
| hasHeritageValue | true ⓘ |
| historic | true ⓘ |
| isPartOf | Porthmadog coastal defences NERFINISHED ⓘ |
| locatedIn |
Gwynedd
NERFINISHED
ⓘ
Porthmadog NERFINISHED ⓘ United Kingdom ⓘ Wales ⓘ |
| material |
earth
ⓘ
stone ⓘ |
| near |
Snowdonia National Park
NERFINISHED
ⓘ
Tremadog Bay NERFINISHED ⓘ |
| protects | Porthmadog NERFINISHED ⓘ |
| protectsFrom |
sea flooding
ⓘ
tidal inundation ⓘ |
| purpose |
flood protection
ⓘ
land reclamation ⓘ transport link ⓘ |
| region | North Wales NERFINISHED ⓘ |
| usedAs |
railway embankment
ⓘ
road causeway ⓘ |
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: Cob embankment Description of subject: Cob embankment is a historic sea wall and causeway in Porthmadog, Wales, built to reclaim land from the sea and protect the town from flooding.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.