Fort McHenry Tunnel
E225022
The Fort McHenry Tunnel is a major underwater highway tunnel in Baltimore, Maryland, carrying Interstate 95 beneath the harbor near Fort McHenry to ease traffic through the city.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Fort McHenry Tunnel canonical | 3 |
| Fort McHenry Tunnel toll facility | 1 |
| Interstate 95 Fort McHenry Tunnel | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1972393 — 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 McHenry Tunnel Context triple: [Patapsco River, crossedBy, Fort McHenry Tunnel]
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A.
Baltimore Harbor Tunnel
The Baltimore Harbor Tunnel is a vehicular tunnel in Baltimore, Maryland, that carries Interstate 895 beneath the harbor as a major route for traffic bypassing downtown.
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B.
Potomac River tunnel
The Potomac River tunnel is an underwater rail tunnel in the Washington, D.C. area that carries Washington Metro trains beneath the Potomac River.
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C.
Center City Tunnel
Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
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D.
Midtown Tunnel
The Midtown Tunnel is a vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
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E.
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.
- 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 McHenry Tunnel Target entity description: The Fort McHenry Tunnel is a major underwater highway tunnel in Baltimore, Maryland, carrying Interstate 95 beneath the harbor near Fort McHenry to ease traffic through the city.
-
A.
Baltimore Harbor Tunnel
The Baltimore Harbor Tunnel is a vehicular tunnel in Baltimore, Maryland, that carries Interstate 895 beneath the harbor as a major route for traffic bypassing downtown.
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B.
Potomac River tunnel
The Potomac River tunnel is an underwater rail tunnel in the Washington, D.C. area that carries Washington Metro trains beneath the Potomac River.
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C.
Center City Tunnel
Center City Tunnel is an underground rail corridor in downtown Philadelphia that links several major commuter rail lines to create a unified through-running system.
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D.
Midtown Tunnel
The Midtown Tunnel is a vehicular tunnel in the Hampton Roads region that carries traffic beneath the Elizabeth River between Norfolk and Portsmouth, Virginia.
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E.
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.
- F. None of above. chosen
Statements (42)
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 McHenry Tunnel Description of subject: The Fort McHenry Tunnel is a major underwater highway tunnel in Baltimore, Maryland, carrying Interstate 95 beneath the harbor near Fort McHenry to ease traffic through the city.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Interstate 95 Fort McHenry Tunnel
this entity surface form:
Fort McHenry Tunnel toll facility