Fort Washington (Potomac River)
E283045
Fort Washington (Potomac River) is a historic 19th-century masonry coastal fortification on the Potomac River in Maryland that served as a key element in the defense of Washington, D.C.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Washington (Potomac River) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2618013 — 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: Fort Washington (Potomac River) Context triple: [Third System of US seacoast defense, hasPart, Fort Washington (Potomac River)]
-
A.
Gwynns Falls
Gwynns Falls is an urban stream and watershed in Baltimore, Maryland, known for its ecological, recreational, and historical significance within the Patapsco River basin.
-
B.
Aquia Creek
Aquia Creek is a tidal tributary of the Potomac River in Virginia, historically significant for transportation, quarrying, and Civil War activity.
-
C.
Patapsco River
The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
-
D.
Accotink Creek
Accotink Creek is a stream in Northern Virginia that flows through Fairfax County and ultimately feeds into the Potomac River.
-
E.
Anacostia River
The Anacostia River is a tidal river in the Washington, D.C. area known for its historical significance, urban setting, and long-running environmental restoration efforts.
- 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: Fort Washington (Potomac River) Target entity description: Fort Washington (Potomac River) is a historic 19th-century masonry coastal fortification on the Potomac River in Maryland that served as a key element in the defense of Washington, D.C.
-
A.
Gwynns Falls
Gwynns Falls is an urban stream and watershed in Baltimore, Maryland, known for its ecological, recreational, and historical significance within the Patapsco River basin.
-
B.
Aquia Creek
Aquia Creek is a tidal tributary of the Potomac River in Virginia, historically significant for transportation, quarrying, and Civil War activity.
-
C.
Patapsco River
The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
-
D.
Accotink Creek
Accotink Creek is a stream in Northern Virginia that flows through Fairfax County and ultimately feeds into the Potomac River.
-
E.
Anacostia River
The Anacostia River is a tidal river in the Washington, D.C. area known for its historical significance, urban setting, and long-running environmental restoration efforts.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
19th-century fortification
ⓘ
historic fort ⓘ masonry coastal fortification ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasFeature |
bastions
ⓘ
enlisted barracks ⓘ moat ⓘ officers' quarters ⓘ parade ground ⓘ powder magazines ⓘ ramparts ⓘ waterfront batteries ⓘ |
| hasView | Potomac River channel ⓘ |
| heritageDesignation | listed on the National Register of Historic Places ⓘ |
| locatedIn | Maryland ⓘ |
| locatedNear | Washington, D.C. ⓘ |
| locatedOn | Potomac River ⓘ |
| managedBy | National Park Service ⓘ |
| material | masonry ⓘ |
| openToPublic | yes ⓘ |
| partOf |
Fort Washington Park
ⓘ
coastal defenses of the United States ⓘ |
| primaryFunction | defense of Washington, D.C. ⓘ |
| region |
Prince George’s County, Maryland
ⓘ
surface form:
Prince George's County, Maryland
|
| strategicRole | protection of the water approach to Washington, D.C. ⓘ |
| tourism | heritage tourism destination ⓘ |
| usedAs | historic site ⓘ |
| usedFor |
artillery emplacement
ⓘ
harbor defense ⓘ military garrison ⓘ |
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: Fort Washington (Potomac River) Description of subject: Fort Washington (Potomac River) is a historic 19th-century masonry coastal fortification on the Potomac River in Maryland that served as a key element in the defense of Washington, D.C.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.