Laacher See
E306334
Laacher See is a large volcanic crater lake in Germany’s Eifel region, known for its caldera formed by a major eruption and ongoing volcanic gas emissions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Laacher See canonical | 12 |
| Laacher See caldera | 2 |
| Laacher See volcano | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2875976 — 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: Laacher See Context triple: [Eifel Mountains, contains, Laacher See]
-
A.
Teufelssee
Teufelssee is a small natural lake in Berlin known for its scenic setting, recreational swimming, and clothing-optional bathing area.
-
B.
Scharmützelsee
Scharmützelsee is a popular lake in eastern Germany known for its scenic surroundings, recreational activities, and spa resorts.
-
C.
Staffelsee
Staffelsee is a picturesque lake in southern Bavaria, Germany, known for its islands, warm bathing waters, and scenic Alpine surroundings.
-
D.
Möhnesee
Möhnesee is a municipality in North Rhine-Westphalia, Germany, known for its large reservoir and scenic recreational area around the Möhne River.
-
E.
Volkerak lake
Volkerak lake is a Dutch freshwater lake in the Rhine–Meuse–Scheldt delta, created as part of the Delta Works water management system.
- 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: Laacher See Target entity description: Laacher See is a large volcanic crater lake in Germany’s Eifel region, known for its caldera formed by a major eruption and ongoing volcanic gas emissions.
-
A.
Teufelssee
Teufelssee is a small natural lake in Berlin known for its scenic setting, recreational swimming, and clothing-optional bathing area.
-
B.
Scharmützelsee
Scharmützelsee is a popular lake in eastern Germany known for its scenic surroundings, recreational activities, and spa resorts.
-
C.
Staffelsee
Staffelsee is a picturesque lake in southern Bavaria, Germany, known for its islands, warm bathing waters, and scenic Alpine surroundings.
-
D.
Möhnesee
Möhnesee is a municipality in North Rhine-Westphalia, Germany, known for its large reservoir and scenic recreational area around the Möhne River.
-
E.
Volkerak lake
Volkerak lake is a Dutch freshwater lake in the Rhine–Meuse–Scheldt delta, created as part of the Delta Works water management system.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
caldera lake
ⓘ
volcanic crater lake ⓘ |
| basinCountry | Germany ⓘ |
| belongsTo |
East Eifel volcanic system
ⓘ
linked to:
East Eifel volcanic field
|
| country | Germany ⓘ |
| emitsGas | carbon dioxide ⓘ |
| eruptionAge |
Late Pleistocene
ⓘ
about 12,900 years ago ⓘ |
| eruptionMagnitude | very large explosive eruption ⓘ |
| formedBy | Laacher See eruption ⓘ |
| hasEcosystem | temperate freshwater lake ecosystem ⓘ |
| hasFeature |
mofettes
ⓘ
subaqueous gas seeps ⓘ |
| hasGeologicalOrigin | volcanic caldera ⓘ |
| hasHazard |
potential future explosive eruption
ⓘ
volcanic gas asphyxiation risk near shore ⓘ |
| hasOngoingProcess | volcanic gas emissions ⓘ |
| hasOutflow | Laacher Bach ⓘ |
| hasProtectedStatus | nature reserve area ⓘ |
| hasScientificSignificance |
paleoclimate reconstruction
ⓘ
tephrochronology ⓘ volcanic hazard assessment ⓘ |
| hasShoreFeature | Maria Laach Abbey ⓘ |
| isConsidered | potentially active volcano ⓘ |
| isMonitoredBy | German volcanological services ⓘ |
| isMonitoredFor |
gas emissions
ⓘ
ground deformation ⓘ seismic activity ⓘ |
| knownFor |
large caldera
ⓘ
pumice deposits ⓘ tephra layers across Central Europe ⓘ |
| locatedIn |
Eifel region
ⓘ
Rhineland-Palatinate ⓘ western Germany ⓘ |
| locatedOn | East Eifel volcanic field ⓘ |
| nearbyRiver | Rhine ⓘ |
| nearbySettlement |
Andernach
ⓘ
Maria Laach ⓘ Mendig ⓘ |
| partOf | Eifel Mountains ⓘ |
| regionType | Quaternary volcanic area ⓘ |
| tectonicSetting | intraplate volcanic field ⓘ |
| usedFor |
recreation
ⓘ
scientific research ⓘ tourism ⓘ |
| volcanicExplosivityIndex | VEI 6 ⓘ |
| waterbodyType | lake ⓘ |
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: Laacher See Description of subject: Laacher See is a large volcanic crater lake in Germany’s Eifel region, known for its caldera formed by a major eruption and ongoing volcanic gas emissions.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
district of Mayen-Koblenz
subject linked to:
Mayen, Germany
linked to: Laacher See
linked to: Laacher See
linked to: Laacher See