Tissa Wewa
E1014191
Tissa Wewa is an ancient artificial reservoir in Sri Lanka, renowned for its historical significance and scenic setting near the town of Tissamaharama.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Tissa Wewa canonical | 1 |
| Tissa Wewa reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12982188 — 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: Tissa Wewa Context triple: [Tissamaharama, hasNearbyAttraction, Tissa Wewa]
-
A.
Puttalam Lagoon
Puttalam Lagoon is a large coastal lagoon in northwestern Sri Lanka known for its rich mangrove ecosystems, fisheries, and importance as a habitat for migratory birds.
-
B.
Kandy Lake
Kandy Lake is an artificial lake in the heart of Kandy, Sri Lanka, known for its scenic setting amid the city’s historic and religious landmarks.
-
C.
Parakrama Samudra (Parakrama Samudraya) reservoir
Parakrama Samudra (Parakrama Samudraya) is a vast ancient irrigation reservoir in Sri Lanka, renowned as a masterpiece of hydraulic engineering built during the reign of King Parakramabahu I.
-
D.
Jaffna Lagoon
Jaffna Lagoon is a large coastal lagoon in northern Sri Lanka known for its rich biodiversity, fishing grounds, and importance to the local Jaffna Peninsula communities.
-
E.
Maduru Oya
Maduru Oya is a major river in Sri Lanka known for its irrigation reservoir and surrounding national park rich in wildlife and dry-zone ecosystems.
- 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: Tissa Wewa Target entity description: Tissa Wewa is an ancient artificial reservoir in Sri Lanka, renowned for its historical significance and scenic setting near the town of Tissamaharama.
-
A.
Puttalam Lagoon
Puttalam Lagoon is a large coastal lagoon in northwestern Sri Lanka known for its rich mangrove ecosystems, fisheries, and importance as a habitat for migratory birds.
-
B.
Kandy Lake
Kandy Lake is an artificial lake in the heart of Kandy, Sri Lanka, known for its scenic setting amid the city’s historic and religious landmarks.
-
C.
Parakrama Samudra (Parakrama Samudraya) reservoir
Parakrama Samudra (Parakrama Samudraya) is a vast ancient irrigation reservoir in Sri Lanka, renowned as a masterpiece of hydraulic engineering built during the reign of King Parakramabahu I.
-
D.
Jaffna Lagoon
Jaffna Lagoon is a large coastal lagoon in northern Sri Lanka known for its rich biodiversity, fishing grounds, and importance to the local Jaffna Peninsula communities.
-
E.
Maduru Oya
Maduru Oya is a major river in Sri Lanka known for its irrigation reservoir and surrounding national park rich in wildlife and dry-zone ecosystems.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
ancient reservoir
ⓘ
artificial lake ⓘ |
| basinCountry | Sri Lanka NERFINISHED ⓘ |
| constructedBy | ancient Sinhalese engineers ⓘ |
| continent | Asia ⓘ |
| country | Sri Lanka ⓘ |
| era | ancient Sri Lankan hydraulic civilization ⓘ |
| hasAccess | road access from Tissamaharama town ⓘ |
| hasActivity |
bird watching
ⓘ
boat rides ⓘ |
| hasCulturalSignificance | Buddhist heritage site surroundings ⓘ |
| hasEcosystem | wetland habitat ⓘ |
| hasFauna |
crocodiles
ⓘ
fish ⓘ water birds ⓘ |
| hasFeature |
earthen embankment
ⓘ
sluice gates ⓘ spillway ⓘ |
| hasFunction |
supports local livelihoods
ⓘ
supports paddy cultivation ⓘ |
| hasScenicFeature |
tree-lined bund
ⓘ
views of Tissamaharama stupa ⓘ |
| hasShoreFeature |
viewpoints for sunset
ⓘ
walking paths along bund ⓘ |
| hasUse |
fishing
ⓘ
irrigation ⓘ recreation ⓘ tourism ⓘ water storage ⓘ |
| hasWaterType | freshwater ⓘ |
| historicalRegion | Ruhuna NERFINISHED ⓘ |
| isArtificial | true ⓘ |
| isNotableFor |
historical significance
ⓘ
role in regional irrigation ⓘ scenic beauty ⓘ |
| isTouristAttraction | true ⓘ |
| languageOfToponym | Sinhala NERFINISHED ⓘ |
| locatedIn | Tissamaharama NERFINISHED ⓘ |
| locatedInAdministrativeEntity |
Hambantota District
NERFINISHED
ⓘ
Southern Province, Sri Lanka NERFINISHED ⓘ |
| nearbyLandmark |
Kataragama
NERFINISHED
ⓘ
Tissamaharama Raja Maha Vihara NERFINISHED ⓘ Yala National Park NERFINISHED ⓘ |
| nearbySettlement | Tissamaharama NERFINISHED ⓘ |
| partOf | ancient irrigation system of Ruhuna ⓘ |
| toponymMeaning | Tissa Tank or Tissa Reservoir NERFINISHED ⓘ |
| tourismRegion | Southern Sri Lanka NERFINISHED ⓘ |
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: Tissa Wewa Description of subject: Tissa Wewa is an ancient artificial reservoir in Sri Lanka, renowned for its historical significance and scenic setting near the town of Tissamaharama.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tissa Wewa reservoir