Lake Tazawa
E870040
Lake Tazawa is a deep, scenic caldera lake in northern Japan renowned for its clear blue waters and surrounding hot spring resorts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lake Tazawa canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T10546791 — 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 Tazawa Context triple: [Akita Prefecture, hasLake, Lake Tazawa]
-
A.
Lake Shoji
Lake Shoji is one of the Fuji Five Lakes in Japan, known for its tranquil waters and scenic views of Mount Fuji.
-
B.
Lake Haruna
Lake Haruna is a scenic crater lake in Gunma Prefecture, Japan, known for its tranquil waters, surrounding volcanic landscapes, and popularity as a recreational and tourist destination.
-
C.
Lake Tōya
Lake Tōya is a nearly circular caldera lake in Hokkaido, Japan, renowned for its clear waters, scenic volcanic surroundings, and hot spring resorts.
-
D.
Lake Tanuki
Lake Tanuki is a scenic artificial lake in Fujinomiya, Shizuoka Prefecture, Japan, renowned for its views of Mount Fuji and popular for camping, fishing, and seasonal festivals.
-
E.
Lake Ōnuma
Lake Ōnuma is a volcanic crater lake situated on Mount Akagi in Gunma Prefecture, Japan, known for its scenic beauty and outdoor recreation.
- 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 Tazawa Target entity description: Lake Tazawa is a deep, scenic caldera lake in northern Japan renowned for its clear blue waters and surrounding hot spring resorts.
-
A.
Lake Shoji
Lake Shoji is one of the Fuji Five Lakes in Japan, known for its tranquil waters and scenic views of Mount Fuji.
-
B.
Lake Haruna
Lake Haruna is a scenic crater lake in Gunma Prefecture, Japan, known for its tranquil waters, surrounding volcanic landscapes, and popularity as a recreational and tourist destination.
-
C.
Lake Tōya
Lake Tōya is a nearly circular caldera lake in Hokkaido, Japan, renowned for its clear waters, scenic volcanic surroundings, and hot spring resorts.
-
D.
Lake Tanuki
Lake Tanuki is a scenic artificial lake in Fujinomiya, Shizuoka Prefecture, Japan, renowned for its views of Mount Fuji and popular for camping, fishing, and seasonal festivals.
-
E.
Lake Ōnuma
Lake Ōnuma is a volcanic crater lake situated on Mount Akagi in Gunma Prefecture, Japan, known for its scenic beauty and outdoor recreation.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
caldera lake
ⓘ
lake ⓘ |
| alternativeName | Tazawa-ko ⓘ |
| associatedLegend | Legend of Tatsuko ⓘ |
| basinCountry | Japan ⓘ |
| climate | humid continental climate ⓘ |
| country | Japan ⓘ |
| depthRankingInJapan | deepest lake in Japan ⓘ |
| formedBy | volcanic activity ⓘ |
| hasFacility |
campgrounds
ⓘ
lakeside hot spring resorts ⓘ viewing platforms ⓘ |
| hasNo |
natural inflow
ⓘ
natural outflow ⓘ |
| hasStatue | Statue of Tatsuko ⓘ |
| hasTransportation | Tazawako Station NERFINISHED ⓘ |
| introducedSpecies |
rainbow trout
ⓘ
sockeye salmon ⓘ
linked to:
Sockeye salmon
|
| JapaneseName | 田沢湖 ⓘ |
| locatedIn | Akita Prefecture ⓘ |
| locatedInMunicipality | Semboku ⓘ |
| locatedInRegion |
Tōhoku region
ⓘ
linked to:
Tohoku
|
| locatedOnIsland |
Honshū
ⓘ
linked to:
Honshu
|
| maximumDepth |
1390 feet
ⓘ
423.4 metres ⓘ |
| nearbyAttraction |
Nyūtō Onsen
ⓘ
linked to:
Nyuto Onsen
Tazawako Onsen ⓘ |
| nearbyMountain | Mount Akita-Komagatake ⓘ |
| nearbySettlement | Tazawako ⓘ |
| notableFeature |
exceptional water transparency
ⓘ
lack of freezing in winter ⓘ steep lake basin ⓘ |
| protectedStatus | part of Towada-Hachimantai National Park vicinity ⓘ |
| railwayLine |
Akita Shinkansen
ⓘ
Tazawako Line ⓘ |
| recreationalActivity |
boating
ⓘ
fishing ⓘ sightseeing cruises ⓘ swimming ⓘ |
| surfaceArea |
10.0 square miles
ⓘ
25.9 square kilometres ⓘ |
| surfaceElevation | 249 metres ⓘ |
| tourismType |
hot spring tourism
ⓘ
scenic tourism ⓘ |
| typeOfLake | oligotrophic lake ⓘ |
| usedFor | hydroelectric power regulation ⓘ |
| viewpoint | Tazawako Observation Deck ⓘ |
| waterColor | deep blue ⓘ |
| waterQualityIssue | acidification from past development projects ⓘ |
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 Tazawa Description of subject: Lake Tazawa is a deep, scenic caldera lake in northern Japan renowned for its clear blue waters and surrounding hot spring resorts.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.