Aberdeen Chemical Agent Disposal Facility
E291003
The Aberdeen Chemical Agent Disposal Facility was a U.S. Army installation in Maryland dedicated to safely destroying stockpiled chemical weapons as part of the nation’s chemical demilitarization efforts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Aberdeen Chemical Agent Disposal Facility canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2574405 — 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: Aberdeen Chemical Agent Disposal Facility Context triple: [U.S. Chemical Demilitarization Program, primarySites, Aberdeen Chemical Agent Disposal Facility]
-
A.
Umatilla Chemical Agent Disposal Facility
The Umatilla Chemical Agent Disposal Facility was a U.S. Army installation in Oregon responsible for safely destroying stockpiled chemical weapons as part of the national chemical demilitarization effort.
-
B.
Tooele Chemical Agent Disposal Facility
The Tooele Chemical Agent Disposal Facility was a major U.S. Army installation in Utah responsible for safely destroying a large portion of the nation’s stockpile of chemical weapons.
-
C.
Johnston Atoll Chemical Agent Disposal System
The Johnston Atoll Chemical Agent Disposal System was a U.S. military facility in the Pacific used to safely destroy and dispose of stockpiled chemical weapons.
-
D.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
E.
Newport Chemical Depot
Newport Chemical Depot was a former U.S. Army installation in Indiana that stored and later destroyed part of the nation’s chemical weapons stockpile.
- 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: Aberdeen Chemical Agent Disposal Facility Target entity description: The Aberdeen Chemical Agent Disposal Facility was a U.S. Army installation in Maryland dedicated to safely destroying stockpiled chemical weapons as part of the nation’s chemical demilitarization efforts.
-
A.
Umatilla Chemical Agent Disposal Facility
The Umatilla Chemical Agent Disposal Facility was a U.S. Army installation in Oregon responsible for safely destroying stockpiled chemical weapons as part of the national chemical demilitarization effort.
-
B.
Tooele Chemical Agent Disposal Facility
The Tooele Chemical Agent Disposal Facility was a major U.S. Army installation in Utah responsible for safely destroying a large portion of the nation’s stockpile of chemical weapons.
-
C.
Johnston Atoll Chemical Agent Disposal System
The Johnston Atoll Chemical Agent Disposal System was a U.S. military facility in the Pacific used to safely destroy and dispose of stockpiled chemical weapons.
-
D.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
E.
Newport Chemical Depot
Newport Chemical Depot was a former U.S. Army installation in Indiana that stored and later destroyed part of the nation’s chemical weapons stockpile.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
United States Army installation
ⓘ
chemical weapons destruction facility ⓘ military installation ⓘ |
| affiliation |
Department of Defense
ⓘ
surface form:
U.S. Department of Defense
|
| associatedWith | Edgewood Chemical Activity ⓘ |
| category |
Chemical weapons destruction facilities of the United States
ⓘ
Military installations in Maryland ⓘ U.S. Army Chemical Materials Activity ⓘ
surface form:
United States Army chemical units and formations
|
| chemicalAgentDestroyed |
HD mustard agent
ⓘ
sulfur mustard ⓘ |
| compliance | Chemical Weapons Convention ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environmentalGoal |
minimize release of toxic substances
ⓘ
safe treatment of neutralization byproducts ⓘ |
| hazardTypeHandled | chemical warfare agents ⓘ |
| locatedIn |
Aberdeen Proving Ground, Maryland
ⓘ
surface form:
Aberdeen Proving Ground
Harford County, Maryland ⓘ Maryland ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn |
Aberdeen Proving Ground, Maryland
ⓘ
surface form:
Aberdeen Proving Ground Edgewood Area
|
| mission | safe destruction of unitary chemical agent stockpiles ⓘ |
| notableFor | destruction of U.S. mustard agent stockpile at Aberdeen Proving Ground ⓘ |
| operator | United States Army ⓘ |
| ownedBy | United States Department of the Army ⓘ |
| partOf |
U.S. Army Chemical Materials Activity
ⓘ
surface form:
U.S. Army Chemical Materials Agency
U.S. stockpile chemical weapons disposal sites ⓘ |
| program | U.S. Chemical Demilitarization Program ⓘ |
| purpose |
chemical weapons demilitarization
ⓘ
destruction of stockpiled chemical weapons ⓘ neutralization of mustard agent ⓘ |
| regulatoryOversightBy |
Maryland Department of the Environment
ⓘ
United States Environmental Protection Agency ⓘ
surface form:
U.S. Environmental Protection Agency
|
| riskManagement |
emergency preparedness planning
ⓘ
monitoring for agent releases ⓘ |
| safetyFocus |
community protection
ⓘ
environmental protection ⓘ worker protection ⓘ |
| safetyStandard | Chemical Weapons Convention compliance ⓘ |
| securityClassification | military restricted area ⓘ |
| status |
closed
ⓘ
demilitarization mission completed ⓘ |
| supervisedBy |
U.S. Army Chemical Materials Activity
ⓘ
surface form:
U.S. Army Chemical Materials Agency
|
| technologyUsed |
chemical neutralization
ⓘ
hydrolysis ⓘ |
| typeOfStockpile | bulk mustard agent ⓘ |
| wasteTreatmentMethod | off-site treatment of hydrolysate ⓘ |
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: Aberdeen Chemical Agent Disposal Facility Description of subject: The Aberdeen Chemical Agent Disposal Facility was a U.S. Army installation in Maryland dedicated to safely destroying stockpiled chemical weapons as part of the nation’s chemical demilitarization efforts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.