Yongbyon Nuclear Scientific Research Center
E571999
Yongbyon Nuclear Scientific Research Center is North Korea’s primary nuclear complex, housing reactors and fuel-cycle facilities central to the country’s production of fissile material for nuclear weapons.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Radiochemical Laboratory at Yongbyon | 1 |
| Yongbyon Nuclear Scientific Research Center canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6122865 — 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: Yongbyon Nuclear Scientific Research Center Context triple: [North Korean nuclear weapons program, keyFacility, Yongbyon Nuclear Scientific Research Center]
-
A.
Kim Chaek Iron and Steel Complex
The Kim Chaek Iron and Steel Complex is one of North Korea’s largest and most important industrial facilities, serving as a key center for the country’s steel production.
-
B.
Kaesong Industrial Region
The Kaesong Industrial Region is a special inter-Korean industrial park in North Korea where South Korean companies operated factories using North Korean labor as a symbol of economic cooperation between the two Koreas.
-
C.
Kahuta uranium enrichment plant
The Kahuta uranium enrichment plant is Pakistan’s primary and highly secretive facility for producing weapons-grade uranium, central to the development of its nuclear arsenal.
-
D.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
E.
Semipalatinsk Test Site
The Semipalatinsk Test Site was the primary Soviet nuclear weapons testing ground, located in northeastern Kazakhstan and notorious for extensive radioactive contamination and long-term health impacts on local populations.
- 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: Yongbyon Nuclear Scientific Research Center Target entity description: Yongbyon Nuclear Scientific Research Center is North Korea’s primary nuclear complex, housing reactors and fuel-cycle facilities central to the country’s production of fissile material for nuclear weapons.
-
A.
Kim Chaek Iron and Steel Complex
The Kim Chaek Iron and Steel Complex is one of North Korea’s largest and most important industrial facilities, serving as a key center for the country’s steel production.
-
B.
Kaesong Industrial Region
The Kaesong Industrial Region is a special inter-Korean industrial park in North Korea where South Korean companies operated factories using North Korean labor as a symbol of economic cooperation between the two Koreas.
-
C.
Kahuta uranium enrichment plant
The Kahuta uranium enrichment plant is Pakistan’s primary and highly secretive facility for producing weapons-grade uranium, central to the development of its nuclear arsenal.
-
D.
K-East Reactor
K-East Reactor was one of the plutonium production reactors at the Hanford Site in Washington State, built during the Cold War to support the U.S. nuclear weapons program.
-
E.
Semipalatinsk Test Site
The Semipalatinsk Test Site was the primary Soviet nuclear weapons testing ground, located in northeastern Kazakhstan and notorious for extensive radioactive contamination and long-term health impacts on local populations.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
nuclear complex
ⓘ
nuclear research facility ⓘ |
| 5MWeReactorOperationalFrom | mid-1980s ⓘ |
| 5MWeReactorPowerOutput | about 5 megawatts electric ⓘ |
| 5MWeReactorPurpose | plutonium production ⓘ |
| alsoKnownAs |
Yongbyon Nuclear Center
NERFINISHED
ⓘ
Yongbyon Nuclear Complex NERFINISHED ⓘ |
| associatedWithProgram | North Korean nuclear weapons program ⓘ |
| constructionBegan | late 1970s ⓘ |
| controlledBy | North Korean government NERFINISHED ⓘ |
| country | North Korea ⓘ |
| distanceFromPyongyang | about 90 km north ⓘ |
| enrichmentPlantEstimatedCentrifuges | about 2000 ⓘ |
| enrichmentPlantRevealed | 2010 ⓘ |
| fuelCycleActivity |
plutonium production
ⓘ
spent fuel reprocessing ⓘ uranium enrichment ⓘ |
| hasFacility |
5 MWe graphite-moderated reactor
ⓘ
Experimental Light Water Reactor ⓘ fuel fabrication plant ⓘ radiochemical laboratory ⓘ radioisotope production facilities ⓘ spent fuel storage facilities ⓘ uranium enrichment plant ⓘ |
| hasSecurityPerimeter | military protection ⓘ |
| linkedTo |
Agreed Framework between the United States and North Korea
NERFINISHED
ⓘ
Six-Party Talks NERFINISHED ⓘ |
| locatedIn |
Democratic People’s Republic of Korea
NERFINISHED
ⓘ
North Pyongan Province NERFINISHED ⓘ Yongbyon NERFINISHED ⓘ |
| locatedOnRiver | Kuryong River NERFINISHED ⓘ |
| monitoredBy |
International Atomic Energy Agency
NERFINISHED
ⓘ
satellite imagery ⓘ |
| nearbySettlement | Yongbyon town NERFINISHED ⓘ |
| operator | North Korea NERFINISHED ⓘ |
| primaryFunction |
nuclear research
ⓘ
production of fissile material for nuclear weapons ⓘ |
| produces |
highly enriched uranium
ⓘ
plutonium ⓘ |
| reactorType |
graphite-moderated reactor
ⓘ
light water reactor ⓘ |
| significance | central to international concerns over North Korea’s nuclear capabilities ⓘ |
| status | key facility for North Korea’s fissile material production ⓘ |
| subjectOf |
International Atomic Energy Agency monitoring efforts
ⓘ
United Nations Security Council resolutions NERFINISHED ⓘ international nuclear negotiations ⓘ |
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: Yongbyon Nuclear Scientific Research Center Description of subject: Yongbyon Nuclear Scientific Research Center is North Korea’s primary nuclear complex, housing reactors and fuel-cycle facilities central to the country’s production of fissile material for nuclear weapons.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Radiochemical Laboratory at Yongbyon