WMATA Blue Line Potomac River crossing
E472868
The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
All labels observed (1)
| Label | Occurrences |
|---|---|
| WMATA Blue Line Potomac River crossing canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4832788 — 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: WMATA Blue Line Potomac River crossing Context triple: [Potomac River crossings toward Washington, D.C., hasComponent, WMATA Blue Line Potomac River crossing]
-
A.
Powhite Parkway Bridge
The Powhite Parkway Bridge is a major toll bridge in Richmond, Virginia, carrying the Powhite Parkway across the James River as part of a key commuter route into the city.
-
B.
George Mason Memorial Bridge
The George Mason Memorial Bridge is a major Potomac River crossing in Washington, D.C., carrying traffic as part of the multi-span 14th Street Bridge complex between the city and Virginia.
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C.
Chesapeake Bay Bridge
The Chesapeake Bay Bridge is a major dual-span suspension bridge in Maryland that carries U.S. Route 50/301 across the Chesapeake Bay, linking Maryland’s eastern and western shores.
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D.
Rockville Bridge
Rockville Bridge is a historic Pennsylvania railroad bridge renowned as one of the longest stone masonry arch bridges in the world.
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E.
Arlington Memorial Bridge
Arlington Memorial Bridge is a historic Neoclassical span across the Potomac River in Washington, D.C., symbolically linking the Lincoln Memorial with Arlington National Cemetery.
- 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: WMATA Blue Line Potomac River crossing Target entity description: The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
-
A.
Powhite Parkway Bridge
The Powhite Parkway Bridge is a major toll bridge in Richmond, Virginia, carrying the Powhite Parkway across the James River as part of a key commuter route into the city.
-
B.
George Mason Memorial Bridge
The George Mason Memorial Bridge is a major Potomac River crossing in Washington, D.C., carrying traffic as part of the multi-span 14th Street Bridge complex between the city and Virginia.
-
C.
Chesapeake Bay Bridge
The Chesapeake Bay Bridge is a major dual-span suspension bridge in Maryland that carries U.S. Route 50/301 across the Chesapeake Bay, linking Maryland’s eastern and western shores.
-
D.
Rockville Bridge
Rockville Bridge is a historic Pennsylvania railroad bridge renowned as one of the longest stone masonry arch bridges in the world.
-
E.
Arlington Memorial Bridge
Arlington Memorial Bridge is a historic Neoclassical span across the Potomac River in Washington, D.C., symbolically linking the Lincoln Memorial with Arlington National Cemetery.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
Metrorail infrastructure segment
ⓘ
railway bridge segment ⓘ |
| connectsTo |
District of Columbia side of the Potomac River
ⓘ
Virginia side of the Potomac River ⓘ |
| crosses | Potomac River ⓘ |
| electrification | third rail ⓘ |
| function | carries rapid transit trains across the Potomac River ⓘ |
| hasOperator | WMATA ⓘ |
| integratedInto |
Washington Metro rail network
ⓘ
linked to:
Washington Metro
|
| lineColor | blue ⓘ |
| locatedIn |
Washington, D.C. metropolitan area
ⓘ
linked to:
Washington metropolitan area
|
| mode | heavy rail rapid transit ⓘ |
| ownedBy | Washington Metropolitan Area Transit Authority ⓘ |
| partOf |
Washington Metro Blue Line
ⓘ
linked to:
Blue Line (Washington Metro)
Washington Metropolitan Area Transit Authority rail system ⓘ
linked to:
Washington Metro
|
| partOfCorridor |
Blue Line route between Virginia and downtown Washington, D.C.
ⓘ
linked to:
Blue Line (Washington Metro)
|
| railGauge | standard gauge ⓘ |
| serves | core of the Washington, D.C. region ⓘ |
| usedBy |
WMATA Blue Line trains
ⓘ
linked to:
Blue Line (Washington Metro)
|
| usedFor | passenger transportation ⓘ |
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: WMATA Blue Line Potomac River crossing Description of subject: The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Potomac River crossings toward Washington, D.C.
→
hasComponent
→
WMATA Blue Line Potomac River crossing
ⓘ