Anacostia River
E38570
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.
All labels observed (13)
How this entity was disambiguated
This entity first appeared as the object of triple T21329 — 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: Anacostia River Context triple: [Potomac River, tributary, Anacostia River]
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A.
Potomac River
The Potomac River is a major waterway in the Mid-Atlantic United States that flows through the Appalachian region and forms part of the boundary between Maryland, Virginia, and Washington, D.C.
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B.
Shenandoah River
The Shenandoah River is a scenic waterway flowing through Virginia and West Virginia, famed for its pastoral valleys, Blue Ridge Mountain backdrop, and prominence in American folk music and Civil War history.
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C.
Charles River
The Charles River is a prominent river in eastern Massachusetts that flows between Boston and Cambridge and is known for its scenic banks, recreational activities, and role in the region’s history and culture.
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D.
Schuylkill River
The Schuylkill River is a major waterway in eastern Pennsylvania that flows through Philadelphia and has historically been central to the region’s transportation, industry, and recreation.
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E.
Hunter River
The Hunter River is a major waterway in New South Wales, Australia, flowing through the Hunter Valley and supporting significant agricultural, industrial, and urban communities before reaching the Tasman Sea at Newcastle.
- 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: Anacostia River Target entity description: 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.
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A.
Potomac River
The Potomac River is a major waterway in the Mid-Atlantic United States that flows through the Appalachian region and forms part of the boundary between Maryland, Virginia, and Washington, D.C.
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B.
Shenandoah River
The Shenandoah River is a scenic waterway flowing through Virginia and West Virginia, famed for its pastoral valleys, Blue Ridge Mountain backdrop, and prominence in American folk music and Civil War history.
-
C.
Charles River
The Charles River is a prominent river in eastern Massachusetts that flows between Boston and Cambridge and is known for its scenic banks, recreational activities, and role in the region’s history and culture.
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D.
Schuylkill River
The Schuylkill River is a major waterway in eastern Pennsylvania that flows through Philadelphia and has historically been central to the region’s transportation, industry, and recreation.
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E.
Hunter River
The Hunter River is a major waterway in New South Wales, Australia, flowing through the Hunter Valley and supporting significant agricultural, industrial, and urban communities before reaching the Tasman Sea at Newcastle.
- F. None of above. chosen
Statements (60)
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: Anacostia River Description of subject: 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.
Referenced by (122)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Anacostia River valley
this entity surface form:
Anacostia River corridor
Frederick Douglass National Historic Site vicinity (on hill above Anacostia)
→
overlooks
→
Anacostia River
ⓘ
this entity surface form:
Anacostia River valley
subject surface form:
Hill East
subject surface form:
Penn Branch
subject surface form:
Congress Heights
subject surface form:
Randle Highlands
subject surface form:
Randle Highlands
this entity surface form:
Anacostia River watershed
this entity surface form:
Anacostia River (nearby via Bladensburg)
this entity surface form:
Anacostia River watershed
this entity surface form:
Anacostia River valley
this entity surface form:
Anacostia
this entity surface form:
Anacostia River watershed
this entity surface form:
Anacostia River in Washington, D.C.
subject surface form:
Congressional Cemetery