Washington Arsenal
E266585
Washington Arsenal was a historic U.S. Army ordnance and munitions facility in Washington, D.C., that later became part of what is now Fort McNair.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Washington Arsenal canonical | 2 |
| Washington Arsenal, Washington, D.C., United States | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2419937 — 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: Washington Arsenal Context triple: [Fort McNair, formerName, Washington Arsenal]
-
A.
Washington Valor
Washington Valor was a professional arena football team based in Washington, D.C., that competed in the Arena Football League.
-
B.
Watertown Arsenal
Watertown Arsenal is a historic former U.S. Army ordnance and research facility in Watertown, Massachusetts, that played a key role in American military manufacturing and technology development.
-
C.
Fort Washington, Maryland
Fort Washington, Maryland is a suburban community in the Washington, D.C. metropolitan area known for its historic fort, residential neighborhoods, and location along the Potomac River.
-
D.
Occoquan
Occoquan is a small historic town in Northern Virginia known for its preserved 18th- and 19th-century architecture, riverside setting, and arts and crafts shops.
-
E.
Baltimore Brigade
The Baltimore Brigade was a professional arena football team based in Baltimore, Maryland, that competed in the Arena Football League.
- 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: Washington Arsenal Target entity description: Washington Arsenal was a historic U.S. Army ordnance and munitions facility in Washington, D.C., that later became part of what is now Fort McNair.
-
A.
Washington Valor
Washington Valor was a professional arena football team based in Washington, D.C., that competed in the Arena Football League.
-
B.
Watertown Arsenal
Watertown Arsenal is a historic former U.S. Army ordnance and research facility in Watertown, Massachusetts, that played a key role in American military manufacturing and technology development.
-
C.
Fort Washington, Maryland
Fort Washington, Maryland is a suburban community in the Washington, D.C. metropolitan area known for its historic fort, residential neighborhoods, and location along the Potomac River.
-
D.
Occoquan
Occoquan is a small historic town in Northern Virginia known for its preserved 18th- and 19th-century architecture, riverside setting, and arts and crafts shops.
-
E.
Baltimore Brigade
The Baltimore Brigade was a professional arena football team based in Baltimore, Maryland, that competed in the Arena Football League.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
United States Army arsenal
ⓘ
munitions facility ⓘ ordnance facility ⓘ |
| adjacentTo |
Anacostia River
ⓘ
Potomac River ⓘ |
| category |
Arsenals of the United States
ⓘ
Former installations of the United States Army ⓘ Military facilities in Washington, D.C. ⓘ Ordnance depots of the United States Army ⓘ |
| city | Washington, D.C. ⓘ |
| coordinateSystem |
WGS84
ⓘ
surface form:
World Geodetic System 1984
|
| country |
United States of America
ⓘ
surface form:
United States
|
| formerNameOf | part of Fort McNair ⓘ |
| function |
manufacture of ordnance
ⓘ
storage of munitions ⓘ testing of weapons ⓘ |
| heritage | American Civil War military infrastructure ⓘ |
| historicDistrictStatus | part of a historic U.S. Army post ⓘ |
| historicUse | Civil War–era ordnance depot ⓘ |
| laterIncorporatedInto |
Fort McNair
ⓘ
surface form:
Fort Lesley J. McNair
|
| locatedAtConfluenceOf |
Anacostia River and Potomac River
ⓘ
surface form:
Potomac River and Anacostia River
|
| locatedIn | Washington, D.C. ⓘ |
| locatedInCapitalCityOf |
United States of America
ⓘ
surface form:
United States
|
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedOn | Greenleaf Point ⓘ |
| militaryInstallationType | arsenal ⓘ |
| operatedBy | United States Army ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf |
Fort McNair
ⓘ
surface form:
Fort Lesley J. McNair
|
| partOfMilitaryBranch |
United States Ordnance Department
ⓘ
surface form:
United States Army Ordnance Department
|
| significantEvent | Washington Arsenal explosion ⓘ |
| significantEventConsequence | loss of life among arsenal workers ⓘ |
| significantEventDate | 1864 ⓘ |
| significantEventType | munitions explosion ⓘ |
| state | District of Columbia ⓘ |
| usedFor |
production of artillery ammunition
ⓘ
production of small arms ammunition ⓘ storage of explosives ⓘ storage of gunpowder ⓘ |
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: Washington Arsenal Description of subject: Washington Arsenal was a historic U.S. Army ordnance and munitions facility in Washington, D.C., that later became part of what is now Fort McNair.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Washington Arsenal, Washington, D.C., United States
subject surface form:
Washington Arsenal Penitentiary