Lake Toba
E94199
Lake Toba is a vast volcanic crater lake in northern Sumatra, Indonesia, renowned as one of the world’s largest and deepest volcanic lakes and a major natural and cultural tourism destination.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Lake Toba canonical | 24 |
| Lake Toba (partly) | 1 |
| Lake Toba region | 1 |
| Lake Toba–Asahan River system | 1 |
| Toba | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T730823 — 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: Lake Toba Context triple: [Sumatra, hasLake, Lake Toba]
-
A.
Bala Lake
Bala Lake is the largest natural lake in Wales, renowned for its scenic surroundings and popularity for boating, fishing, and watersports.
-
B.
Poopó Lake
Poopó Lake is a large, shallow saline lake in the Bolivian Andes, known for its fluctuating water levels and ecological importance to the surrounding Altiplano region.
-
C.
Lake Velence
Lake Velence is one of Hungary’s largest natural lakes, known as a popular resort and recreation area in the Transdanubian region.
-
D.
San Andreas Lake
San Andreas Lake is a long, narrow reservoir on the San Francisco Peninsula in California, best known for lending its name to the nearby San Andreas Fault.
-
E.
Benya Lagoon
Benya Lagoon is a coastal lagoon in Elmina, Ghana, known for its fishing activities and proximity to the historic Elmina Castle.
- 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: Lake Toba Target entity description: Lake Toba is a vast volcanic crater lake in northern Sumatra, Indonesia, renowned as one of the world’s largest and deepest volcanic lakes and a major natural and cultural tourism destination.
-
A.
Bala Lake
Bala Lake is the largest natural lake in Wales, renowned for its scenic surroundings and popularity for boating, fishing, and watersports.
-
B.
Poopó Lake
Poopó Lake is a large, shallow saline lake in the Bolivian Andes, known for its fluctuating water levels and ecological importance to the surrounding Altiplano region.
-
C.
Lake Velence
Lake Velence is one of Hungary’s largest natural lakes, known as a popular resort and recreation area in the Transdanubian region.
-
D.
San Andreas Lake
San Andreas Lake is a long, narrow reservoir on the San Francisco Peninsula in California, best known for lending its name to the nearby San Andreas Fault.
-
E.
Benya Lagoon
Benya Lagoon is a coastal lagoon in Elmina, Ghana, known for its fishing activities and proximity to the historic Elmina Castle.
- F. None of above. chosen
Statements (63)
| Predicate | Object |
|---|---|
| instanceOf |
caldera lake
ⓘ
tourist attraction ⓘ volcanic crater lake ⓘ |
| basinCountry | Indonesia ⓘ |
| country | Indonesia ⓘ |
| environmentalConcern |
deforestation in surrounding areas
ⓘ
fish farming impacts ⓘ water pollution risks ⓘ |
| formedBy | supervolcanic eruption ⓘ |
| governedBy | North Sumatra provincial authorities ⓘ |
| hasCulturalSignificanceFor |
Batak people
ⓘ
linked to:
Batak
|
| hasEconomicActivity |
fisheries
ⓘ
small-scale agriculture ⓘ tourism industry ⓘ |
| hasFeature |
Samosir Island
ⓘ
caldera rim ⓘ hot springs ⓘ peninsulas and bays ⓘ steep crater walls ⓘ |
| hasIsland |
Samosir Island
ⓘ
numerous small islands ⓘ |
| inhabitedBy |
Batak Toba people
ⓘ
linked to:
Batak
|
| isMajorDestinationFor |
domestic tourists
ⓘ
international tourists ⓘ |
| knownFor |
Batak culture
ⓘ
being one of the world’s deepest volcanic lakes ⓘ being one of the world’s largest volcanic lakes ⓘ cool highland climate ⓘ cultural tourism ⓘ freshwater fish ⓘ natural tourism ⓘ scenic mountain landscapes ⓘ traditional Batak houses ⓘ |
| languageRegion | Batak languages ⓘ |
| locatedIn |
North Sumatra
ⓘ
Southeast Asia ⓘ Toba Caldera ⓘ Toba Highlands ⓘ tropical climate zone ⓘ |
| locatedNear | Medan ⓘ |
| locatedOn |
island of Sumatra
ⓘ
linked to:
Sumatra
|
| nearbyEthnicGroup |
Batak Karo people
ⓘ
linked to:
Batak
Batak Simalungun people ⓘ
linked to:
Batak
|
| partOf |
East Indies
ⓘ
Malay Archipelago ⓘ Toba Caldera Geopark ⓘ |
| popularActivity |
boating
ⓘ
cultural performances ⓘ fishing ⓘ hiking ⓘ swimming ⓘ |
| recognizedAs |
UNESCO Global Geopark
ⓘ
linked to:
UNESCO Global Geoparks
|
| religionRegion |
Christianity among Batak communities
ⓘ
Islam in surrounding areas ⓘ |
| surroundedBy |
Batak villages
ⓘ
hills ⓘ volcanic mountains ⓘ |
| tourismType |
adventure tourism
ⓘ
cultural tourism ⓘ ecotourism ⓘ |
| transportAccess |
ferry services to Samosir Island
ⓘ
road connections from Medan ⓘ |
| waterType | freshwater ⓘ |
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: Lake Toba Description of subject: Lake Toba is a vast volcanic crater lake in northern Sumatra, Indonesia, renowned as one of the world’s largest and deepest volcanic lakes and a major natural and cultural tourism destination.
Referenced by (28)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lake Toba
linked to: Lake Toba
linked to: Lake Toba
linked to: Lake Toba