Main Crater
E418827
Main Crater is the principal volcanic crater of Costa Rica’s Irazú Volcano, known for its steep walls and often vividly colored crater lake.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Main Crater canonical | 1 |
| Main Crater Lake | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4183987 — 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: Main Crater Context triple: [Irazú, hasCrater, Main Crater]
-
A.
Crater
Crater is a historic district and port area in the city of Aden, Yemen, known for its location within an ancient volcanic crater and its role as a commercial and administrative center.
-
B.
Grand Valley
Grand Valley is a fertile valley in western Colorado known for its agriculture, particularly fruit orchards and vineyards, and as the home region of Grand Junction.
-
C.
Klyden
Klyden is a Moclan character from the science fiction TV series "The Orville," known as Bortus's conservative and often contentious mate.
-
D.
Timber Canyon
Timber Canyon is a themed area within the Dollywood amusement park that features rustic, logging-inspired attractions and rides.
-
E.
Canyon
Canyon is a small city in the Texas Panhandle known as the home of West Texas A&M University and a gateway to Palo Duro Canyon State Park.
- 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: Main Crater Target entity description: Main Crater is the principal volcanic crater of Costa Rica’s Irazú Volcano, known for its steep walls and often vividly colored crater lake.
-
A.
Crater
Crater is a historic district and port area in the city of Aden, Yemen, known for its location within an ancient volcanic crater and its role as a commercial and administrative center.
-
B.
Grand Valley
Grand Valley is a fertile valley in western Colorado known for its agriculture, particularly fruit orchards and vineyards, and as the home region of Grand Junction.
-
C.
Klyden
Klyden is a Moclan character from the science fiction TV series "The Orville," known as Bortus's conservative and often contentious mate.
-
D.
Timber Canyon
Timber Canyon is a themed area within the Dollywood amusement park that features rustic, logging-inspired attractions and rides.
-
E.
Canyon
Canyon is a famous 1959 combine painting by Robert Rauschenberg that merges traditional painting with found objects, including a stuffed bald eagle, exemplifying his radical blurring of art and everyday materials.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
geological formation
ⓘ
volcanic crater ⓘ |
| associatedHazard |
ashfall during eruptions
ⓘ
volcanic gas emissions ⓘ |
| country | Costa Rica ⓘ |
| countryProtectedAreaAuthority | SINAC (Costa Rica National System of Conservation Areas) ⓘ |
| depth | approximately 300 meters ⓘ |
| diameter | approximately 1 kilometer ⓘ |
| elevationAboveSeaLevel | approximately 3400 meters at rim ⓘ |
| formedBy | explosive volcanic activity ⓘ |
| geologicalAge | Quaternary ⓘ |
| hasAccessInfrastructure |
marked trails and viewpoints
ⓘ
parking area near rim ⓘ |
| hasColorVariation |
brown
ⓘ
gray ⓘ green ⓘ turquoise ⓘ |
| hasFeature |
crater lake
ⓘ
steep crater walls ⓘ vividly colored lake water ⓘ |
| hasTouristAccess | yes ⓘ |
| hostVolcano | Irazú Volcano ⓘ |
| lakeWaterAcidity | acidic ⓘ |
| lakeWaterOrigin | rainwater mixed with volcanic fluids ⓘ |
| locatedIn |
Irazú Volcano National Park
ⓘ
linked to:
Irazú
|
| locatedInAdministrativeTerritory | Cartago Province ⓘ |
| locatedInMountainRange | Cordillera Central ⓘ |
| locatedOnContinent | North America ⓘ |
| nearbyCity |
Cartago
ⓘ
San José ⓘ |
| partOf | Irazú Volcano ⓘ |
| protectedAreaStatus | within national park ⓘ |
| tourismActivity |
photography
ⓘ
sightseeing ⓘ |
| typicalClimate | cold and windy ⓘ |
| viewpointType | rim overlook ⓘ |
| visibilityCondition | often affected by fog and clouds ⓘ |
| volcanoTypeOfHost | stratovolcano ⓘ |
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: Main Crater Description of subject: Main Crater is the principal volcanic crater of Costa Rica’s Irazú Volcano, known for its steep walls and often vividly colored crater lake.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Main Crater