Frederick Douglass Memorial Bridge (southern landing)
E217212
The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Frederick Douglass Memorial Bridge (southern landing) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1832914 — 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: Frederick Douglass Memorial Bridge (southern landing) Context triple: [Southeast Washington, D.C., contains, Frederick Douglass Memorial Bridge (southern landing)]
-
A.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
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B.
Longfellow Bridge
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
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C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
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D.
14th Street Bridge
The 14th Street Bridge is a major bridge complex over the Potomac River in the Washington, D.C. area that carries multiple highway and rail routes between Virginia and the nation’s capital.
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E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- 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: Frederick Douglass Memorial Bridge (southern landing) Target entity description: The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
-
A.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
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B.
Longfellow Bridge
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
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C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
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D.
14th Street Bridge
The 14th Street Bridge is a major bridge complex over the Potomac River in the Washington, D.C. area that carries multiple highway and rail routes between Virginia and the nation’s capital.
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E.
Walt Whitman Bridge
The Walt Whitman Bridge is a major suspension bridge connecting Philadelphia, Pennsylvania, to Gloucester City, New Jersey, and serving as a key highway crossing over the Delaware River.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
bridge landing
ⓘ
transportation infrastructure element ⓘ |
| associatedWith | Anacostia River crossing in Washington, D.C. ⓘ |
| connectsTo |
Anacostia neighborhood
ⓘ
local road network in Southeast Washington, D.C. ⓘ nearby Southeast Washington, D.C. neighborhoods ⓘ |
| crossesTo |
Frederick Douglass Memorial Bridge (northern landing)
ⓘ
linked to:
Frederick Douglass Memorial Bridge
|
| function |
links the bridge to nearby neighborhoods
ⓘ
links the bridge to nearby roadways ⓘ provides access between the bridge span and Southeast Washington, D.C. ⓘ |
| locatedIn |
District of Columbia
ⓘ
Southeast Washington, D.C. ⓘ Washington, D.C. ⓘ |
| locatedInCountry | United States of America ⓘ |
| locatedOnRiver | Anacostia River ⓘ |
| namedAfter | Frederick Douglass ⓘ |
| partOf |
Frederick Douglass Memorial Bridge
ⓘ
roadway approaches of Frederick Douglass Memorial Bridge ⓘ |
| positionRelativeToRiver | southern bank of the Anacostia River ⓘ |
| roleInTransportationNetwork | major access point for a primary Anacostia River crossing ⓘ |
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: Frederick Douglass Memorial Bridge (southern landing) Description of subject: The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.