Grand Prismatic Spring
E182980
Grand Prismatic Spring is a massive, vividly multicolored hot spring in Yellowstone National Park and one of the most iconic geothermal features in the world.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Grand Prismatic Spring canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1607808 — 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: Grand Prismatic Spring Context triple: [Yellowstone National Park, knownFor, Grand Prismatic Spring]
-
A.
El Tatio geyser field
El Tatio geyser field is a high-altitude geothermal area in northern Chile’s Andes, famous for its numerous active geysers, steaming fumaroles, and dramatic sunrise landscapes.
-
B.
Bridalveil Fall
Bridalveil Fall is a famous, picturesque waterfall in California’s Yosemite Valley known for its year-round flow and mist that often creates striking rainbows.
-
C.
Navajo Falls
Navajo Falls is a picturesque waterfall in the Havasu Creek area of the Grand Canyon, renowned for its turquoise pools and cultural significance to the Havasupai people.
-
D.
Chalybeate Spring
Chalybeate Spring is a historic iron-rich mineral spring in Royal Tunbridge Wells, England, long famed for its supposedly health-giving waters and role in the town’s development as a spa resort.
-
E.
Horsetail Falls
Horsetail Falls is a picturesque, horsetail-shaped waterfall in Oregon that cascades down a basalt cliff along the Columbia River Gorge.
- 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: Grand Prismatic Spring Target entity description: Grand Prismatic Spring is a massive, vividly multicolored hot spring in Yellowstone National Park and one of the most iconic geothermal features in the world.
-
A.
El Tatio geyser field
El Tatio geyser field is a high-altitude geothermal area in northern Chile’s Andes, famous for its numerous active geysers, steaming fumaroles, and dramatic sunrise landscapes.
-
B.
Bridalveil Fall
Bridalveil Fall is a famous, picturesque waterfall in California’s Yosemite Valley known for its year-round flow and mist that often creates striking rainbows.
-
C.
Navajo Falls
Navajo Falls is a picturesque waterfall in the Havasu Creek area of the Grand Canyon, renowned for its turquoise pools and cultural significance to the Havasupai people.
-
D.
Chalybeate Spring
Chalybeate Spring is a historic iron-rich mineral spring in Royal Tunbridge Wells, England, long famed for its supposedly health-giving waters and role in the town’s development as a spa resort.
-
E.
Horsetail Falls
Horsetail Falls is a picturesque, horsetail-shaped waterfall in Oregon that cascades down a basalt cliff along the Columbia River Gorge.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
geothermal feature
ⓘ
hot spring ⓘ natural feature ⓘ tourist attraction ⓘ |
| approximateTemperatureCenter | around 70 °C to 90 °C ⓘ |
| basin | Midway Geyser Basin ⓘ |
| causeOfColors |
microbial mats
ⓘ
pigmented thermophilic bacteria ⓘ |
| centerColor | deep blue ⓘ |
| color |
blue
ⓘ
brown ⓘ green ⓘ orange ⓘ red ⓘ yellow ⓘ |
| colorPattern | concentric color rings ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| depth |
about 160 feet
ⓘ
about 50 meters ⓘ |
| diameter |
about 110 meters
ⓘ
about 370 feet ⓘ |
| discoveredBy | European American surveyors in the 19th century ⓘ |
| ecosystemType | thermophilic microbial ecosystem ⓘ |
| famousImageType | aerial photographs ⓘ |
| geologicalSetting | volcanic hotspot ⓘ |
| hazard |
fragile thermal crust
ⓘ
very hot water ⓘ |
| locatedIn |
Midway Geyser Basin
ⓘ
Teton County, Wyoming ⓘ United States of America ⓘ
surface form:
United States
Wyoming ⓘ Yellowstone National Park ⓘ |
| notableFor |
being one of the most photographed features in Yellowstone
ⓘ
large size ⓘ vivid multicolored appearance ⓘ |
| outerRingColor |
orange
ⓘ
red ⓘ yellow ⓘ |
| park | Yellowstone National Park ⓘ |
| partOf |
Yellowstone Caldera
ⓘ
surface form:
Yellowstone Caldera geothermal system
|
| rankBySizeInUS | largest hot spring in the United States ⓘ |
| rankBySizeInWorld | third-largest hot spring in the world ⓘ |
| regulation | visitors must stay on boardwalks and designated trails ⓘ |
| shape | roughly circular ⓘ |
| surveyAssociation |
U.S. Geographical and Geological Survey of the Rocky Mountain Region
ⓘ
surface form:
Hayden Geological Survey
|
| temperatureGradient |
cooler at the edges
ⓘ
hotter in the center ⓘ |
| tourism | major visitor attraction in Yellowstone National Park ⓘ |
| viewingMethod |
boardwalks around Midway Geyser Basin
ⓘ
overlook trail on a nearby hill ⓘ |
| visibilityFromSpace | visible in high-resolution satellite imagery ⓘ |
| waterSource | geothermal groundwater ⓘ |
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: Grand Prismatic Spring Description of subject: Grand Prismatic Spring is a massive, vividly multicolored hot spring in Yellowstone National Park and one of the most iconic geothermal features in the world.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.