Roman dam of Cornalvo
E783016
The Roman dam of Cornalvo is an ancient Roman gravity dam in Extremadura, Spain, renowned for its remarkably preserved structure and continued role in water management as part of the Archaeological Ensemble of Mérida.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Roman dam of Cornalvo canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9178805 — 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: Roman dam of Cornalvo Context triple: [Archaeological Ensemble of Mérida, hasPart, Roman dam of Cornalvo]
-
A.
Roman dam of Proserpina
The Roman dam of Proserpina is an ancient Roman gravity dam near Mérida, Spain, renowned for its well-preserved masonry and continued use as part of the region’s water supply system.
-
B.
Roman bridge of Canosa
The Roman bridge of Canosa is an ancient stone bridge in Canosa di Puglia, Italy, notable for its Roman engineering and historical significance as part of the region’s early transportation network.
-
C.
Roman Walls of Lugo
The Roman Walls of Lugo are an exceptionally well-preserved 3rd-century Roman defensive fortification encircling the historic center of Lugo in Galicia, Spain, and recognized as a UNESCO World Heritage Site.
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D.
Bridge of Vulci
The Bridge of Vulci is an ancient Etruscan-Roman stone bridge near the archaeological site of Vulci in central Italy, notable for its impressive arches spanning a deep river gorge.
-
E.
Vallum Antonini
Vallum Antonini is the Latin name for the Antonine Wall, a Roman frontier fortification in central Scotland marking the northernmost boundary of the Roman Empire in Britain for a time.
- 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: Roman dam of Cornalvo Target entity description: The Roman dam of Cornalvo is an ancient Roman gravity dam in Extremadura, Spain, renowned for its remarkably preserved structure and continued role in water management as part of the Archaeological Ensemble of Mérida.
-
A.
Roman dam of Proserpina
The Roman dam of Proserpina is an ancient Roman gravity dam near Mérida, Spain, renowned for its well-preserved masonry and continued use as part of the region’s water supply system.
-
B.
Roman bridge of Canosa
The Roman bridge of Canosa is an ancient stone bridge in Canosa di Puglia, Italy, notable for its Roman engineering and historical significance as part of the region’s early transportation network.
-
C.
Roman Walls of Lugo
The Roman Walls of Lugo are an exceptionally well-preserved 3rd-century Roman defensive fortification encircling the historic center of Lugo in Galicia, Spain, and recognized as a UNESCO World Heritage Site.
-
D.
Bridge of Vulci
The Bridge of Vulci is an ancient Etruscan-Roman stone bridge near the archaeological site of Vulci in central Italy, notable for its impressive arches spanning a deep river gorge.
-
E.
Vallum Antonini
Vallum Antonini is the Latin name for the Antonine Wall, a Roman frontier fortification in central Scotland marking the northernmost boundary of the Roman Empire in Britain for a time.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Roman dam
ⓘ
ancient monument ⓘ gravity dam ⓘ |
| architecturalStyle | Roman engineering ⓘ |
| basinCountry | Spain ⓘ |
| builtFor |
Roman colony of Emerita Augusta
ⓘ
linked to:
Colonia Iulia Augusta Emerita
|
| condition | well preserved ⓘ |
| constructionMethod | gravity dam design ⓘ |
| country | Spain ⓘ |
| crosses | Albarregas River ⓘ |
| currentUse | still in operation ⓘ |
| hasFunction | impoundment of surface water ⓘ |
| hasSpillway | yes ⓘ |
| hasTypeOfPlan | curved plan ⓘ |
| height | approximately 28 metres ⓘ |
| heritageDesignation |
Bien de Interés Cultural
ⓘ
UNESCO World Heritage Site component ⓘ |
| heritageStatus | protected cultural property in Spain ⓘ |
| inception | 1st–2nd century CE ⓘ |
| length | approximately 220 metres ⓘ |
| locatedIn |
Cornalvo Natural Park
ⓘ
Extremadura ⓘ Spain ⓘ province of Badajoz ⓘ
linked to:
Province of Badajoz
|
| locatedInTime | Roman Empire ⓘ |
| locatedNear |
city of Mérida
ⓘ
linked to:
Mérida
|
| maintainedBy | Confederación Hidrográfica del Guadiana ⓘ |
| materialUsed |
concrete core
ⓘ
granite blocks ⓘ rubble masonry ⓘ |
| nearbyCity | Mérida ⓘ |
| partOf |
Archaeological Ensemble of Mérida
ⓘ
Cornalvo y Sierra Bermeja protected area ⓘ
linked to:
Cornalvo Natural Park
|
| region |
Autonomous community of Extremadura
ⓘ
linked to:
Extremadura
|
| reservoirCapacity | approximately 6 million cubic metres ⓘ |
| riverBasin |
Guadiana basin
ⓘ
linked to:
Guadiana Basin
|
| significantFor |
Roman hydraulic engineering
ⓘ
continuous use since antiquity ⓘ state of preservation ⓘ |
| touristAttraction | yes ⓘ |
| UNESCOWorldHeritageSiteOf | Archaeological Ensemble of Mérida ⓘ |
| usedFor |
flood control
ⓘ
irrigation ⓘ urban water management of Mérida ⓘ water supply ⓘ |
| waterBodyCreated | Cornalvo Reservoir ⓘ |
| widthAtBase | approximately 18 metres ⓘ |
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: Roman dam of Cornalvo Description of subject: The Roman dam of Cornalvo is an ancient Roman gravity dam in Extremadura, Spain, renowned for its remarkably preserved structure and continued role in water management as part of the Archaeological Ensemble of Mérida.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
ancient city of Augusta Emerita