Chelmno
E9187
Chełmno was a Nazi German extermination camp in occupied Poland where mass killings of Jews and other victims were carried out primarily using gas vans during the Holocaust.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Chełmno extermination camp | 11 |
| Chelmno extermination camp | 7 |
| Chelmno canonical | 3 |
| Kulmhof | 1 |
| Kulmhof extermination camp | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T14130 — 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: Chelmno Context triple: [Holocaust, notableCamp, Chelmno]
-
A.
Belzec
Belzec was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust.
-
B.
Treblinka
Treblinka was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust.
-
C.
Sobibor
Sobibor was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust and where a notable prisoner uprising occurred in 1943.
-
D.
AuschwitzBirkenau
Auschwitz-Birkenau was the largest and most infamous Nazi German concentration and extermination camp, where over a million Jews and other victims were systematically murdered during the Holocaust.
-
E.
Wannsee
Wannsee is a lakeside district in southwestern Berlin, Germany, known for its villa colonies, recreational waterfront, and as the site of the infamous 1942 Wannsee Conference.
- 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: Chelmno Target entity description: Chełmno was a Nazi German extermination camp in occupied Poland where mass killings of Jews and other victims were carried out primarily using gas vans during the Holocaust.
-
A.
Belzec
Belzec was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust.
-
B.
Treblinka
Treblinka was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust.
-
C.
Sobibor
Sobibor was a Nazi German extermination camp in occupied Poland where hundreds of thousands of Jews were murdered during the Holocaust and where a notable prisoner uprising occurred in 1943.
-
D.
AuschwitzBirkenau
Auschwitz-Birkenau was the largest and most infamous Nazi German concentration and extermination camp, where over a million Jews and other victims were systematically murdered during the Holocaust.
-
E.
Wannsee
Wannsee is a lakeside district in southwestern Berlin, Germany, known for its villa colonies, recreational waterfront, and as the site of the infamous 1942 Wannsee Conference.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Holocaust site
ⓘ
Nazi German extermination camp ⓘ |
| alsoKnownAs |
Chelmno
ⓘ
surface form:
Kulmhof
Kulmhof an der Nehr ⓘ |
| country | Nazi Germany ⓘ |
| endDate | 1943-03-11 ⓘ |
| estimatedNumberOfVictims |
at least 152000
ⓘ
up to 200000 ⓘ |
| event |
destruction of evidence by exhumation and cremation of bodies
ⓘ
systematic extermination of Jews ⓘ |
| finalLiquidationDate | 1945-01 ⓘ |
| guardedBy |
German SS personnel
ⓘ
auxiliary police units ⓘ |
| hasStructure |
cremation pyres
ⓘ
forest burial and cremation site ⓘ manor house killing site ⓘ mass graves ⓘ |
| hasSurvivors | very few known survivors ⓘ |
| jurisdictionDuringOperation | Reichsgau Wartheland ⓘ |
| languageOfToponym | Polish ⓘ |
| locatedIn |
Chełmno nad Nerem
ⓘ
Greater Poland ⓘ
surface form:
Greater Poland region
Wartheland ⓘ occupied Poland ⓘ |
| locatedInPresentDayCountry | Poland ⓘ |
| memorial | Chełmno extermination camp memorial site ⓘ |
| notableFeature |
first stationary extermination camp established by Nazi Germany
ⓘ
mass killings carried out primarily using gas vans ⓘ |
| operatedBy |
Reich Main Security Office
ⓘ
SS ⓘ |
| partOf |
Final Solution
ⓘ
Holocaust ⓘ
surface form:
Holocaust in Poland
|
| perpetrator |
Nazi Germany
ⓘ
Schutzstaffel (SS) ⓘ
surface form:
Schutzstaffel
|
| reopened | 1944-06 ⓘ |
| startDate | 1941-12-08 ⓘ |
| transportedFrom |
Koło
ⓘ
surrounding villages in Wartheland ⓘ Łódź Ghetto ⓘ |
| usedMethodOfKilling |
carbon monoxide poisoning
ⓘ
gas vans ⓘ |
| victimGroup |
Austrian Jews
ⓘ
Czech Jews ⓘ German Jews ⓘ Jews ⓘ Lodz Ghetto Jews ⓘ Poles ⓘ Roma ⓘ Soviet prisoners of war ⓘ |
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: Chelmno Description of subject: Chełmno was a Nazi German extermination camp in occupied Poland where mass killings of Jews and other victims were carried out primarily using gas vans during the Holocaust.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chelmno extermination camp
subject surface form:
Chełmno extermination camp
this entity surface form:
Kulmhof
this entity surface form:
Chelmno extermination camp
this entity surface form:
Chelmno extermination camp
this entity surface form:
Chelmno extermination camp
subject surface form:
Łódź Ghetto Jews
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Kulmhof extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chełmno extermination camp
this entity surface form:
Chelmno extermination camp
this entity surface form:
Chelmno extermination camp
this entity surface form:
Chelmno extermination camp