Kallanai Dam
E1032955
Kallanai Dam is an ancient stone masonry dam built across the Kaveri River in Tamil Nadu, India, renowned as one of the world’s oldest water-regulation structures still in use.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kallanai Dam canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13036471 — 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: Kallanai Dam Context triple: [Kallanai, hasAlias, Kallanai Dam]
-
A.
Shiroro Dam
Shiroro Dam is a major hydroelectric power facility on the Kaduna River in Niger State, Nigeria, supplying electricity and supporting water management in the region.
-
B.
Surobi Dam
Surobi Dam is a hydroelectric and irrigation dam located on the Kabul River in eastern Afghanistan.
-
C.
Lodoyo Dam
Lodoyo Dam is a water control and irrigation structure located on the Brantas River in East Java, Indonesia.
-
D.
Kajaki Dam
Kajaki Dam is a major hydroelectric and irrigation dam on the Helmand River in southern Afghanistan, known both for its strategic importance and as the site of significant military activity during the Afghan conflict.
-
E.
Koka Dam
Koka Dam is a major hydroelectric and irrigation dam in Ethiopia that creates the Koka Reservoir on the Awash River.
- 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: Kallanai Dam Target entity description: Kallanai Dam is an ancient stone masonry dam built across the Kaveri River in Tamil Nadu, India, renowned as one of the world’s oldest water-regulation structures still in use.
-
A.
Shiroro Dam
Shiroro Dam is a major hydroelectric power facility on the Kaduna River in Niger State, Nigeria, supplying electricity and supporting water management in the region.
-
B.
Surobi Dam
Surobi Dam is a hydroelectric and irrigation dam located on the Kabul River in eastern Afghanistan.
-
C.
Lodoyo Dam
Lodoyo Dam is a water control and irrigation structure located on the Brantas River in East Java, Indonesia.
-
D.
Kajaki Dam
Kajaki Dam is a major hydroelectric and irrigation dam on the Helmand River in southern Afghanistan, known both for its strategic importance and as the site of significant military activity during the Afghan conflict.
-
E.
Koka Dam
Koka Dam is a major hydroelectric and irrigation dam in Ethiopia that creates the Koka Reservoir on the Awash River.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ancient monument
ⓘ
dam ⓘ tourist attraction ⓘ water-regulation structure ⓘ |
| accessBy | road from Tiruchirappalli ⓘ |
| alsoKnownAs |
Grand Anicut
ⓘ
linked to:
Kallanai (Grand Anicut)
Kallanai ⓘ |
| builderDynasty |
Early Cholas
ⓘ
linked to:
Chola dynasty
|
| constructedBy | Karikala Chola ⓘ |
| constructionMaterial | stone masonry ⓘ |
| country | India ⓘ |
| culturalSignificance | important in Chola history ⓘ |
| currentUse |
flood control
ⓘ
irrigation ⓘ tourism ⓘ |
| designType | diversion weir ⓘ |
| district | Tiruchirappalli district ⓘ |
| engineeringSignificance | example of ancient hydraulic engineering ⓘ |
| estimatedConstructionPeriod |
2nd century CE
ⓘ
Sangam era ⓘ |
| function | diverts water from Kaveri River for irrigation ⓘ |
| hasSpillways | yes ⓘ |
| height | about 20 metres ⓘ |
| heritageStatus |
ancient engineering structure
ⓘ
one of the oldest water-regulation structures still in use ⓘ |
| influenced | modern irrigation works in the Kaveri delta ⓘ |
| influencesCanalSystem |
Kaveri irrigation canals
ⓘ
linked to:
Cauvery irrigation system
|
| inRegion |
Cauvery Delta
ⓘ
linked to:
Kaveri River Delta
|
| length | about 329 metres ⓘ |
| locatedIn |
India
ⓘ
Tamil Nadu ⓘ |
| locatedOnRiver |
Kaveri River
ⓘ
linked to:
Kaveri
|
| maintainedBy | Government of Tamil Nadu ⓘ |
| managesIrrigationFor | delta regions of the Kaveri ⓘ |
| nearbyVillage | Kallanai village ⓘ |
| nearestCity | Tiruchirappalli ⓘ |
| notableFor |
continuous use for nearly two millennia
ⓘ
stone masonry construction without modern cement ⓘ |
| partOf |
Kaveri irrigation system
ⓘ
linked to:
Cauvery irrigation system
|
| primaryPurpose |
irrigation
ⓘ
water regulation ⓘ |
| region | South India ⓘ |
| riverBasin |
Kaveri basin
ⓘ
linked to:
Cauvery River basin
|
| state | Tamil Nadu ⓘ |
| tourismCategory |
historical site
ⓘ
riverfront attraction ⓘ |
| width | about 60 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: Kallanai Dam Description of subject: Kallanai Dam is an ancient stone masonry dam built across the Kaveri River in Tamil Nadu, India, renowned as one of the world’s oldest water-regulation structures still in use.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Kallanai (Grand Anicut)