Vembanad Lake
E208520
Vembanad Lake is the largest lake in the Indian state of Kerala, famed for its scenic backwaters, houseboat tourism, and rich wetland ecosystem.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Vembanad Lake canonical | 6 |
| Vembanad-Kol Wetland | 2 |
| Lake of Kochi (Vembanad Lake backwaters) | 1 |
| Vembanad Kayal | 1 |
| Vembanad Kol | 1 |
| Vembanad Wetland System | 1 |
| Vembanad backwaters | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1862839 — 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: Vembanad Lake Context triple: [Kerala, hasBackwaterLake, Vembanad Lake]
-
A.
Lal Bahadur Shastri Sagar
Lal Bahadur Shastri Sagar is a major reservoir in Karnataka, India, formed by the Almatti Dam on the Krishna River and used for irrigation, power generation, and water supply.
-
B.
Santragachi Jheel
Santragachi Jheel is a large freshwater lake and important wintering site for migratory birds located in the Santragachi area of Howrah, West Bengal, India.
-
C.
Maharana Pratap Sagar
Maharana Pratap Sagar is a large man-made lake and wildlife sanctuary in Himachal Pradesh, India, renowned as a major habitat for migratory birds and a popular site for water sports and fishing.
-
D.
Pulicat
Pulicat is a historic coastal town in southeastern India known for its lagoon, colonial-era trading history, and rich birdlife.
-
E.
Loktak Lake
Loktak Lake is the largest freshwater lake in Northeast India, renowned for its floating phumdis and the Keibul Lamjao floating national park that is home to the endangered sangai deer.
- 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: Vembanad Lake Target entity description: Vembanad Lake is the largest lake in the Indian state of Kerala, famed for its scenic backwaters, houseboat tourism, and rich wetland ecosystem.
-
A.
Lal Bahadur Shastri Sagar
Lal Bahadur Shastri Sagar is a major reservoir in Karnataka, India, formed by the Almatti Dam on the Krishna River and used for irrigation, power generation, and water supply.
-
B.
Santragachi Jheel
Santragachi Jheel is a large freshwater lake and important wintering site for migratory birds located in the Santragachi area of Howrah, West Bengal, India.
-
C.
Maharana Pratap Sagar
Maharana Pratap Sagar is a large man-made lake and wildlife sanctuary in Himachal Pradesh, India, renowned as a major habitat for migratory birds and a popular site for water sports and fishing.
-
D.
Pulicat
Pulicat is a historic coastal town in southeastern India known for its lagoon, colonial-era trading history, and rich birdlife.
-
E.
Loktak Lake
Loktak Lake is the largest freshwater lake in Northeast India, renowned for its floating phumdis and the Keibul Lamjao floating national park that is home to the endangered sangai deer.
- F. None of above. chosen
Statements (73)
| Predicate | Object |
|---|---|
| instanceOf |
backwater
ⓘ
lake ⓘ |
| alsoKnownAs |
Punnamada Lake
ⓘ
Vembanad Lake ⓘ
surface form:
Vembanad Kayal
Vembanad Lake ⓘ
surface form:
Vembanad Kol
Vembanad Lake ⓘ
surface form:
Vembanad Wetland System
|
| area | approximately 2033 square kilometres (wetland system) ⓘ |
| basinCountry | India ⓘ |
| climate | tropical monsoon ⓘ |
| connectedTo | Arabian Sea ⓘ |
| contains |
Kumarakom Bird Sanctuary vicinity
ⓘ
Kuttanad region ⓘ Pathiramanal Island ⓘ Kuttanad region ⓘ
surface form:
Thanneermukkom region
|
| country | India ⓘ |
| economicActivity |
inland fisheries
ⓘ
rice cultivation ⓘ tourism ⓘ |
| ecoregion | Vembanad-Kol wetland ecosystem ⓘ |
| governedBy | Government of Kerala ⓘ |
| hasCityOnShore |
Alappuzha
ⓘ
Cherthala ⓘ Kochi ⓘ Kumarakom ⓘ Vaikom ⓘ |
| hasEvent | Nehru Trophy Boat Race vicinity ⓘ |
| hasInflow |
Achankovil River
ⓘ
Manimala River NERFINISHED ⓘ Meenachil River ⓘ Muvattupuzha River ⓘ Pamba River ⓘ |
| hasOutflow | Arabian Sea ⓘ |
| hasStructure |
Thanneermukkom Bund
ⓘ
Thottappally Spillway ⓘ |
| is |
largest lake in Kerala
ⓘ
longest lake in India ⓘ |
| knownFor |
backwater tourism
ⓘ
birdwatching ⓘ fishing ⓘ houseboat cruises ⓘ paddy cultivation in Kuttanad ⓘ |
| length | approximately 96 kilometres ⓘ |
| locatedIn |
Kerala
ⓘ
South India ⓘ district of Alappuzha ⓘ district of Ernakulam ⓘ district of Idukki ⓘ district of Kottayam ⓘ district of Pathanamthitta ⓘ |
| maxDepth | approximately 12 metres ⓘ |
| near | Kumarakom Bird Sanctuary ⓘ |
| partOf |
Vembanad Lake
self-linksurface differs
ⓘ
surface form:
Vembanad-Kol Wetland
|
| RamsarDesignationYear | 2002 ⓘ |
| RamsarSiteName |
Vembanad Lake
self-linksurface differs
ⓘ
surface form:
Vembanad-Kol Wetland
|
| RamsarStatus | designated Ramsar wetland ⓘ |
| region | Kuttanad ⓘ |
| stateLargestLakeOf | Kerala ⓘ |
| supports |
fish diversity
ⓘ
mangrove vegetation ⓘ migratory birds ⓘ waterfowl populations ⓘ |
| threatenedBy |
invasive species
ⓘ
pollution ⓘ reclamation ⓘ sand mining ⓘ |
| tourismActivity |
backwater cruises
ⓘ
houseboat stays ⓘ shikara boat rides ⓘ |
| type |
brackish lagoon
ⓘ
coastal wetland ⓘ |
| usedFor |
inland navigation
ⓘ
irrigation ⓘ transportation ⓘ |
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: Vembanad Lake Description of subject: Vembanad Lake is the largest lake in the Indian state of Kerala, famed for its scenic backwaters, houseboat tourism, and rich wetland ecosystem.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Vembanad Kayal
this entity surface form:
Vembanad Kol
this entity surface form:
Vembanad Wetland System
this entity surface form:
Vembanad-Kol Wetland
this entity surface form:
Vembanad-Kol Wetland
this entity surface form:
Lake of Kochi (Vembanad Lake backwaters)