Medvezhya caldera
E830600
Medvezhya caldera is a large volcanic depression on Iturup Island in Russia’s Kuril Islands, known for its active geothermal and volcanic features.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Medvezhya caldera canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9940370 — 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: Medvezhya caldera Context triple: [Kudryavy Volcano, hasNearbyFeature, Medvezhya caldera]
-
A.
Tao-Rusyr Caldera
Tao-Rusyr Caldera is a large volcanic caldera and prominent geological feature located on Onekotan Island in Russia’s Kuril Island chain.
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B.
Zavaritsky Caldera
Zavaritsky Caldera is a volcanic caldera located in Russia’s Kuril Islands, known for its explosive eruptions and rugged, remote setting in the northwest Pacific.
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C.
Bory Crater
Bory Crater is a volcanic crater forming part of the summit complex of the active shield volcano Piton de la Fournaise on Réunion Island in the Indian Ocean.
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D.
Uzon caldera
Uzon caldera is a large volcanic depression in Russia’s Kamchatka Peninsula, renowned for its active geothermal features, hot springs, and diverse volcanic landscapes within the Kamchatka volcanic arc.
-
E.
Silverthrone Caldera
Silverthrone Caldera is a large, remote volcanic caldera and ice-covered massif in the Coast Mountains of British Columbia, Canada, known for its extensive glaciation and rugged terrain.
- 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: Medvezhya caldera Target entity description: Medvezhya caldera is a large volcanic depression on Iturup Island in Russia’s Kuril Islands, known for its active geothermal and volcanic features.
-
A.
Tao-Rusyr Caldera
Tao-Rusyr Caldera is a large volcanic caldera and prominent geological feature located on Onekotan Island in Russia’s Kuril Island chain.
-
B.
Zavaritsky Caldera
Zavaritsky Caldera is a volcanic caldera located in Russia’s Kuril Islands, known for its explosive eruptions and rugged, remote setting in the northwest Pacific.
-
C.
Bory Crater
Bory Crater is a volcanic crater forming part of the summit complex of the active shield volcano Piton de la Fournaise on Réunion Island in the Indian Ocean.
-
D.
Uzon caldera
Uzon caldera is a large volcanic depression in Russia’s Kamchatka Peninsula, renowned for its active geothermal features, hot springs, and diverse volcanic landscapes within the Kamchatka volcanic arc.
-
E.
Silverthrone Caldera
Silverthrone Caldera is a large, remote volcanic caldera and ice-covered massif in the Coast Mountains of British Columbia, Canada, known for its extensive glaciation and rugged terrain.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | caldera ⓘ |
| activityStatus | active ⓘ |
| continent | Asia ⓘ |
| country | Russia ⓘ |
| dominantRockType |
andesite
ⓘ
basaltic andesite ⓘ dacite ⓘ |
| elevation | approximately 1124 m ⓘ |
| eruptionStyle |
explosive
ⓘ
phreatic ⓘ phreatomagmatic ⓘ |
| geologicAge |
Holocene
NERFINISHED
ⓘ
Quaternary ⓘ |
| hasFeature |
active geothermal fields
ⓘ
crater lakes ⓘ fumaroles ⓘ hot springs ⓘ hydrothermal alteration zones ⓘ lava domes ⓘ solfataras ⓘ |
| hasLanguageName | Russian ⓘ |
| hasProcess |
fumarolic degassing
ⓘ
hydrothermal circulation ⓘ |
| hazardType |
hydrothermal eruptions
ⓘ
phreatic explosions ⓘ volcanic gas emissions ⓘ |
| heatSource | shallow magma chamber ⓘ |
| islandArcType | oceanic island arc ⓘ |
| isPartOf | Iturup Island volcanic system NERFINISHED ⓘ |
| lastEruption | 20th century ⓘ |
| locatedIn |
Kuril Islands
ⓘ
Northwestern Pacific Ocean NERFINISHED ⓘ Pacific Ring of Fire NERFINISHED ⓘ Russian Far East NERFINISHED ⓘ Sakhalin Oblast NERFINISHED ⓘ |
| locatedOn | Iturup Island NERFINISHED ⓘ |
| monitoredBy | Russian volcanological agencies ⓘ |
| namedAfter | Russian word "Medvezhya" meaning "bear" ⓘ |
| nearTo |
Pacific Ocean
NERFINISHED
ⓘ
Sea of Okhotsk NERFINISHED ⓘ |
| partOf | Kuril Island Arc NERFINISHED ⓘ |
| region | Kuril Islands chain NERFINISHED ⓘ |
| tectonicSetting | subduction zone volcano ⓘ |
| volcanicArc | Kuril–Kamchatka volcanic arc NERFINISHED ⓘ |
| volcanoType | stratovolcano with caldera complex ⓘ |
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: Medvezhya caldera Description of subject: Medvezhya caldera is a large volcanic depression on Iturup Island in Russia’s Kuril Islands, known for its active geothermal and volcanic features.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.