Marib Dam
E224611
Marib Dam is an ancient and historically significant irrigation dam in Yemen, considered one of the great engineering achievements of the pre-Islamic Arabian world.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Marib Dam canonical | 3 |
| Ma'rib Dam | 1 |
| New Marib Dam | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2017952 — 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: Marib Dam Context triple: [Coat of arms of Yemen, features, Marib Dam]
-
A.
Almatti Dam
Almatti Dam is a major hydroelectric and irrigation dam in Karnataka, India, built across the Krishna River as part of the Upper Krishna Project.
-
B.
Betania Dam
Betania Dam is a major hydroelectric dam and reservoir in Colombia, known for generating power and supporting irrigation and aquaculture in the Huila region.
-
C.
Bargi Dam
Bargi Dam is a major multipurpose dam built on the Narmada River in Madhya Pradesh, India, primarily used for irrigation, hydropower generation, and flood control.
-
D.
Itá Dam
Itá Dam is a large hydroelectric power plant and reservoir on the Uruguay River in southern Brazil, known for its significant contribution to regional electricity generation.
-
E.
Lahontan Dam
Lahontan Dam is a large early-20th-century concrete gravity dam in western Nevada that creates Lahontan Reservoir for irrigation, flood control, and recreation.
- 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: Marib Dam Target entity description: Marib Dam is an ancient and historically significant irrigation dam in Yemen, considered one of the great engineering achievements of the pre-Islamic Arabian world.
-
A.
Almatti Dam
Almatti Dam is a major hydroelectric and irrigation dam in Karnataka, India, built across the Krishna River as part of the Upper Krishna Project.
-
B.
Betania Dam
Betania Dam is a major hydroelectric dam and reservoir in Colombia, known for generating power and supporting irrigation and aquaculture in the Huila region.
-
C.
Bargi Dam
Bargi Dam is a major multipurpose dam built on the Narmada River in Madhya Pradesh, India, primarily used for irrigation, hydropower generation, and flood control.
-
D.
Itá Dam
Itá Dam is a large hydroelectric power plant and reservoir on the Uruguay River in southern Brazil, known for its significant contribution to regional electricity generation.
-
E.
Lahontan Dam
Lahontan Dam is a large early-20th-century concrete gravity dam in western Nevada that creates Lahontan Reservoir for irrigation, flood control, and recreation.
- F. None of above. chosen
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
ancient dam
ⓘ
archaeological site ⓘ irrigation infrastructure ⓘ |
| associatedWith |
Sabaean kingdom
ⓘ
surface form:
Kingdom of Saba
|
| associatedWithEvent | flood of the dam (Sayl al-ʿArim) ⓘ |
| climateContext | arid environment ⓘ |
| consequenceOfFailure |
decline of Ma'rib oasis
ⓘ
migration of South Arabian tribes ⓘ |
| considered | one of the great engineering achievements of the pre-Islamic Arabian world ⓘ |
| constructedBy | Sabaeans ⓘ |
| constructionTechnique | gravity dam ⓘ |
| country | Yemen ⓘ |
| createdIrrigatedArea | up to 25,000 hectares ⓘ |
| crosses | Wadi Adhana ⓘ |
| estimatedInitialConstructionCentury |
7th century BCE
ⓘ
8th century BCE ⓘ |
| experiencedFailure | multiple times in antiquity ⓘ |
| finalMajorFailureApproxDate | around 570 CE ⓘ |
| finalMajorFailureCentury | 6th century CE ⓘ |
| hasFeature |
distribution canals
ⓘ
diversion channels ⓘ intake structures ⓘ sluice gates ⓘ spillways ⓘ |
| hasType |
earthen dam
ⓘ
saddle dam ⓘ |
| height | approximately 14 meters ⓘ |
| heritageStatus | important cultural heritage site of Yemen ⓘ |
| historicalPeriod | pre-Islamic Arabia ⓘ |
| irrigatedValley |
Ma'rib
ⓘ
surface form:
Ma'rib oasis
Sabaean heartland ⓘ |
| length | approximately 580 meters ⓘ |
| locatedIn |
Ma'rib
ⓘ
surface form:
Marib Governorate
|
| locatedInHistoricalRegion | Sabaean kingdom ⓘ |
| locatedInRegion |
Southern Arabia
ⓘ
surface form:
South Arabia
|
| locatedNear |
Ma'rib
ⓘ
surface form:
city of Ma'rib
|
| locatedOn | Wadi Dhana ⓘ |
| materialUsed |
earth
ⓘ
stone ⓘ |
| mentionedIn | Islamic historical tradition ⓘ |
| nearbyModernStructure |
Marib Dam
self-linksurface differs
ⓘ
surface form:
New Marib Dam
|
| primaryFunction |
flood control
ⓘ
irrigation ⓘ |
| purpose |
to regulate water supply for agriculture
ⓘ
to store seasonal floodwaters ⓘ |
| recognizedAs | major ancient engineering work ⓘ |
| supportedEconomyOf |
Sabaean kingdom
ⓘ
surface form:
Kingdom of Saba
South Arabian incense trade centers ⓘ |
| tourismType | cultural tourism site ⓘ |
| underwentMajorRepairs |
1st century BCE
ⓘ
1st century CE ⓘ 2nd century BCE ⓘ 2nd century CE ⓘ 3rd century BCE ⓘ 5th century CE ⓘ 6th century CE ⓘ |
| usedFor | agricultural irrigation ⓘ |
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: Marib Dam Description of subject: Marib Dam is an ancient and historically significant irrigation dam in Yemen, considered one of the great engineering achievements of the pre-Islamic Arabian world.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ma'rib Dam
this entity surface form:
New Marib Dam