Mount Ijen
E164113
Mount Ijen is an active volcano in Indonesia famed for its striking turquoise crater lake and rare electric-blue sulfur flames.
All labels observed (9)
| Label | Occurrences |
|---|---|
| Mount Ijen canonical | 5 |
| Ijen Plateau | 4 |
| Ijen crater rim | 3 |
| Ijen volcano complex | 3 |
| Ijen Crater | 2 |
| Ijen caldera | 2 |
| Ijen Mountains | 1 |
| Ijen blue fire viewpoint | 1 |
| Kawah Ijen | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1366215 — 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: Mount Ijen Context triple: [East Java, containsVolcano, Mount Ijen]
-
A.
Mount Bromo
Mount Bromo is an active and highly popular volcano in East Java, Indonesia, renowned for its dramatic crater landscape and sunrise views within the Tengger caldera.
-
B.
Mount Semeru
Mount Semeru is the highest and one of the most active volcanoes on the Indonesian island of Java, renowned for its frequent eruptions and prominent conical peak.
-
C.
Mount Rinjani
Mount Rinjani is an active stratovolcano on the island of Lombok known for its large caldera lake, challenging trekking routes, and significant cultural and geological importance.
-
D.
Mount Batur
Mount Batur is an active stratovolcano in northeastern Bali, Indonesia, known for its scenic caldera lake and popular sunrise treks.
-
E.
Ekarma Volcano
Ekarma Volcano is an active stratovolcano forming the uninhabited island of Ekarma in the central Kuril Islands chain of the northwest Pacific.
- 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: Mount Ijen Target entity description: Mount Ijen is an active volcano in Indonesia famed for its striking turquoise crater lake and rare electric-blue sulfur flames.
-
A.
Mount Bromo
Mount Bromo is an active and highly popular volcano in East Java, Indonesia, renowned for its dramatic crater landscape and sunrise views within the Tengger caldera.
-
B.
Mount Semeru
Mount Semeru is the highest and one of the most active volcanoes on the Indonesian island of Java, renowned for its frequent eruptions and prominent conical peak.
-
C.
Mount Rinjani
Mount Rinjani is an active stratovolcano on the island of Lombok known for its large caldera lake, challenging trekking routes, and significant cultural and geological importance.
-
D.
Mount Batur
Mount Batur is an active stratovolcano in northeastern Bali, Indonesia, known for its scenic caldera lake and popular sunrise treks.
-
E.
Ekarma Volcano
Ekarma Volcano is an active stratovolcano forming the uninhabited island of Ekarma in the central Kuril Islands chain of the northwest Pacific.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
active volcano
ⓘ
crater lake ⓘ stratovolcano ⓘ volcanic crater ⓘ |
| accessPoint | Paltuding ⓘ |
| blueFireVisibleAt | night ⓘ |
| color | turquoise ⓘ |
| country | Indonesia ⓘ |
| craterLakeType | acidic sulfate-chloride lake ⓘ |
| elevation |
2799 m
ⓘ
9183 ft ⓘ |
| eruptionType | phreatic eruption ⓘ |
| geologicalSetting | subduction zone volcano ⓘ |
| hasActivity | sulfur extraction ⓘ |
| hasCrater |
Ijen Crater
ⓘ
linked to:
Ijen Crater Lake
|
| hasFeature |
fumaroles
ⓘ
steep crater walls ⓘ sulfur deposits ⓘ |
| hasLake | Ijen Crater Lake ⓘ |
| hasTrail | Paltuding–crater rim trail ⓘ |
| hasWorker | sulfur miner ⓘ |
| hazard |
acidic lake water
ⓘ
sudden lake gas releases ⓘ toxic volcanic gas emissions ⓘ |
| knownFor |
electric-blue sulfur flames
ⓘ
high acidity ⓘ high sulfur content ⓘ nighttime blue fire phenomenon ⓘ sulfur mining ⓘ |
| lastEruption | 21 March 2018 ⓘ |
| locatedIn |
Banyuwangi Regency
ⓘ
linked to:
Banyuwangi
Bondowoso Regency ⓘ East Java ⓘ Java ⓘ |
| managedBy |
Perhutani (Indonesian state forestry company)
ⓘ
linked to:
Perhutani
|
| mountainRange |
Ijen Mountains
ⓘ
linked to:
Mount Ijen
|
| nearestCity |
Banyuwangi
ⓘ
Bondowoso ⓘ |
| notableFor |
intense sulfur mining carried out by hand
ⓘ
one of the most acidic crater lakes in the world ⓘ |
| partOf |
Ijen Plateau
ⓘ
linked to:
Mount Ijen
Ijen volcano complex ⓘ
linked to:
Mount Ijen
|
| protectedAreaStatus | nature tourism park ⓘ |
| sulfurFlamesCause | burning sulfuric gases ⓘ |
| tourismType |
hiking destination
ⓘ
volcano tourism ⓘ |
| volcanicArcOrBelt | Sunda Arc ⓘ |
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: Mount Ijen Description of subject: Mount Ijen is an active volcano in Indonesia famed for its striking turquoise crater lake and rare electric-blue sulfur flames.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen
linked to: Mount Ijen