East Boston Tunnel
E230826
The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
All labels observed (5)
| Label | Occurrences |
|---|---|
| East Boston Tunnel canonical | 3 |
| Fort Point Channel Tunnel | 2 |
| Boston Elevated Railway East Boston Tunnel | 1 |
| East Boston tunnels | 1 |
| MBTA Blue Line harbor tunnel | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2063539 — 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: East Boston Tunnel Context triple: [Blue Line (MBTA), originalName, East Boston 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.
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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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.
Ted Williams Tunnel (Boston)
The Ted Williams Tunnel in Boston is a major underwater highway tunnel beneath Boston Harbor that forms part of the city's Central Artery/Tunnel Project, commonly known as the Big Dig.
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E.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
- 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: East Boston Tunnel Target entity description: The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
-
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.
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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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.
Ted Williams Tunnel (Boston)
The Ted Williams Tunnel in Boston is a major underwater highway tunnel beneath Boston Harbor that forms part of the city's Central Artery/Tunnel Project, commonly known as the Big Dig.
-
E.
53rd Street Tunnel
The 53rd Street Tunnel is a New York City Subway tunnel under the East River that carries IND Queens Boulevard Line trains between Manhattan and Queens.
- F. None of above. chosen
Statements (47)
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: East Boston Tunnel Description of subject: The East Boston Tunnel is a historic underwater transit tunnel in Boston that originally carried streetcars and now forms part of the MBTA’s Blue Line subway connection between downtown Boston and East Boston.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Blue Line
linked to: East Boston Tunnel
linked to: East Boston Tunnel
linked to: East Boston Tunnel
linked to: East Boston Tunnel
linked to: East Boston Tunnel