Crater Lake
E13254
Crater Lake is a deep, intensely blue caldera lake in southern Oregon, formed in the collapsed remains of the volcano Mount Mazama and renowned as the centerpiece of Crater Lake National Park.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Crater Lake canonical | 25 |
| Crater Lake caldera | 7 |
| Crater Lake (Mount Mazama) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T111078 — 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: Crater Lake Context triple: [Cascade Volcanic Arc, hasVolcano, Crater Lake]
-
A.
Lake Tahoe
Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
-
B.
Lake Tear of the Clouds
Lake Tear of the Clouds is a small mountain tarn on the slopes of New York’s Mount Marcy, historically recognized as the highest-elevation source of the Hudson River.
-
C.
Lake Tahoe Basin
The Lake Tahoe Basin is a high-altitude watershed in the Sierra Nevada centered on Lake Tahoe, renowned for its clear alpine lake, surrounding forests, and year-round outdoor recreation.
-
D.
Lake Carnegie
Lake Carnegie is a man-made lake in Princeton, New Jersey, best known as a rowing and recreational waterway associated with Princeton University.
-
E.
South Lake Tahoe
South Lake Tahoe is a resort city in California known for its access to Lake Tahoe’s beaches, ski resorts, 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: Crater Lake Target entity description: Crater Lake is a deep, intensely blue caldera lake in southern Oregon, formed in the collapsed remains of the volcano Mount Mazama and renowned as the centerpiece of Crater Lake National Park.
-
A.
Lake Tahoe
Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
-
B.
Lake Tear of the Clouds
Lake Tear of the Clouds is a small mountain tarn on the slopes of New York’s Mount Marcy, historically recognized as the highest-elevation source of the Hudson River.
-
C.
Lake Tahoe Basin
The Lake Tahoe Basin is a high-altitude watershed in the Sierra Nevada centered on Lake Tahoe, renowned for its clear alpine lake, surrounding forests, and year-round outdoor recreation.
-
D.
Lake Carnegie
Lake Carnegie is a man-made lake in Princeton, New Jersey, best known as a rowing and recreational waterway associated with Princeton University.
-
E.
South Lake Tahoe
South Lake Tahoe is a resort city in California known for its access to Lake Tahoe’s beaches, ski resorts, and outdoor recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
caldera lake
ⓘ
landmark ⓘ natural lake ⓘ tourist attraction ⓘ |
| age | about 7,700 years since formation ⓘ |
| attracts | tourists ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| color | deep blue ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county |
Klamath County, Oregon
ⓘ
surface form:
Klamath County
|
| establishedAsNationalPark | 1902 ⓘ |
| formationProcess | volcanic eruption and caldera collapse ⓘ |
| formedBy | collapse of Mount Mazama ⓘ |
| formedInCalderaOf | Mount Mazama ⓘ |
| governingBody |
National Park Service
ⓘ
surface form:
U.S. National Park Service
|
| hasIsland |
Phantom Ship
ⓘ
Wizard Island ⓘ |
| hasNo |
significant inflowing rivers
ⓘ
significant outflowing rivers ⓘ |
| knownFor |
being one of the deepest lakes in the world
ⓘ
deep blue color ⓘ exceptional water clarity ⓘ scenic beauty ⓘ |
| locatedIn |
Crater Lake National Park
ⓘ
Klamath County, Oregon ⓘ Oregon ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn |
Mount Mazama
ⓘ
surface form:
Mount Mazama caldera floor
|
| maximumDepth |
about 1,949 feet
ⓘ
about 594 meters ⓘ |
| namedAfter | its volcanic crater-like basin ⓘ |
| partOf |
Cascade Range
ⓘ
Pacific Northwest ⓘ |
| popularActivities |
boat tours
ⓘ
hiking ⓘ sightseeing ⓘ |
| primaryWaterSource |
precipitation
ⓘ
snowmelt ⓘ |
| protectedBy | Crater Lake National Park ⓘ |
| region | southern Oregon ⓘ |
| state | Oregon ⓘ |
| surfaceArea |
about 20 square miles
ⓘ
about 53 square kilometers ⓘ |
| surfaceElevation |
about 1,883 meters above sea level
ⓘ
about 6,178 feet above sea level ⓘ |
| typeOfVolcanicFeature | caldera ⓘ |
| waterClarity | among the highest of any natural lake ⓘ |
| 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: Crater Lake Description of subject: Crater Lake is a deep, intensely blue caldera lake in southern Oregon, formed in the collapsed remains of the volcano Mount Mazama and renowned as the centerpiece of Crater Lake National Park.
Referenced by (33)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake caldera
this entity surface form:
Crater Lake (Mount Mazama)
this entity surface form:
Crater Lake caldera