Nagarjuna Sagar Dam
E32692
Nagarjuna Sagar Dam is a major masonry dam in southern India, renowned as one of the world’s largest man-made lakes and a key source of irrigation and hydroelectric power for the region.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Nagarjuna Sagar Dam canonical | 6 |
| Nagarjuna Sagar | 2 |
| Nagarjuna Sagar Reservoir | 2 |
| Nagarjuna Sagar Project | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T247331 — 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: Nagarjuna Sagar Dam Context triple: [Krishna River, hasDam, Nagarjuna Sagar Dam]
-
A.
Indira Gandhi Canal
The Indira Gandhi Canal is one of India’s longest irrigation canals, built to bring water from the Sutlej and Beas rivers to arid regions of Rajasthan, transforming parts of the Thar Desert into cultivable land.
-
B.
Kisan Ghat
Kisan Ghat is a memorial in Delhi dedicated to Indian farmers, located near the Raj Ghat complex.
-
C.
Chenab River
The Chenab River is a major river of the Indian subcontinent that flows through the Jammu region and into Pakistan, playing a key role in the Indus River system and regional agriculture.
-
D.
Namami Gange
Namami Gange is an Indian government flagship initiative aimed at cleaning, rejuvenating, and protecting the Ganges River and its ecosystem.
-
E.
Sutlej River
The Sutlej River is a major transboundary river of the northwestern Indian subcontinent, originating in Tibet and flowing through the Himalayas into the plains of India and Pakistan, where it forms an important part of the Indus River system.
- 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: Nagarjuna Sagar Dam Target entity description: Nagarjuna Sagar Dam is a major masonry dam in southern India, renowned as one of the world’s largest man-made lakes and a key source of irrigation and hydroelectric power for the region.
-
A.
Indira Gandhi Canal
The Indira Gandhi Canal is one of India’s longest irrigation canals, built to bring water from the Sutlej and Beas rivers to arid regions of Rajasthan, transforming parts of the Thar Desert into cultivable land.
-
B.
Kisan Ghat
Kisan Ghat is a memorial in Delhi dedicated to Indian farmers, located near the Raj Ghat complex.
-
C.
Chenab River
The Chenab River is a major river of the Indian subcontinent that flows through the Jammu region and into Pakistan, playing a key role in the Indus River system and regional agriculture.
-
D.
Namami Gange
Namami Gange is an Indian government flagship initiative aimed at cleaning, rejuvenating, and protecting the Ganges River and its ecosystem.
-
E.
Sutlej River
The Sutlej River is a major transboundary river of the northwestern Indian subcontinent, originating in Tibet and flowing through the Himalayas into the plains of India and Pakistan, where it forms an important part of the Indus River system.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
dam
ⓘ
hydroelectric power station ⓘ masonry dam ⓘ |
| associatedWith | Nagarjunakonda archaeological site nearby ⓘ |
| benefits |
agricultural development
ⓘ
power supply stability in southern India ⓘ rural livelihoods ⓘ |
| borderBetween | Telangana and Andhra Pradesh ⓘ |
| classification | major dam in India ⓘ |
| constructedBy |
Andhra State
ⓘ
surface form:
Government of Andhra Pradesh (undivided)
Government of India ⓘ |
| constructionBegan | 1955 ⓘ |
| continent | Asia ⓘ |
| country | India ⓘ |
| crosses | Krishna River ⓘ |
| engineeringSignificance | major post-independence river valley project in India ⓘ |
| hasFeature | large reservoir suitable for boating and tourism ⓘ |
| hasSpillway | yes ⓘ |
| height | approximately 124 meters ⓘ |
| installedCapacity | hydroelectric power station of several hundred megawatts ⓘ |
| irrigatesRegion |
Andhra Pradesh
ⓘ
Telangana ⓘ |
| length | approximately 1,550 meters ⓘ |
| locatedIn | southern India ⓘ |
| locatedInState |
Andhra Pradesh
ⓘ
Telangana ⓘ |
| locatedOnRiver | Krishna River ⓘ |
| managedBy | state irrigation departments of Telangana and Andhra Pradesh ⓘ |
| namedAfter | Nagarjuna ⓘ |
| nearCity |
Guntur
ⓘ
Nalgonda ⓘ |
| notableFor |
being one of the world’s largest man-made lakes
ⓘ
large irrigation command area ⓘ major hydroelectric power generation in southern India ⓘ |
| opened | 1967 ⓘ |
| partOf | Krishna River irrigation projects ⓘ |
| purpose |
flood control
ⓘ
hydroelectric power generation ⓘ irrigation ⓘ water supply ⓘ |
| region | Deccan Plateau ⓘ |
| regionServed | Krishna River basin ⓘ |
| reservoirName |
Nagarjuna Sagar Dam
self-linksurface differs
ⓘ
surface form:
Nagarjuna Sagar Reservoir
|
| reservoirType | artificial lake ⓘ |
| spillwayType | gated spillway ⓘ |
| touristAttraction | yes ⓘ |
| typeOfDam | masonry gravity dam ⓘ |
| waterSourceFor | drinking water to nearby towns and cities ⓘ |
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: Nagarjuna Sagar Dam Description of subject: Nagarjuna Sagar Dam is a major masonry dam in southern India, renowned as one of the world’s largest man-made lakes and a key source of irrigation and hydroelectric power for the region.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Nagarjuna Sagar
this entity surface form:
Nagarjuna Sagar Reservoir
this entity surface form:
Nagarjuna Sagar Reservoir
this entity surface form:
Nagarjuna Sagar
this entity surface form:
Nagarjuna Sagar Project