Sumner Tunnel
E535316
The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Callahan Tunnel | 4 |
| Sumner Tunnel canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5649984 — 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: Sumner Tunnel Context triple: [East Boston, Massachusetts, connectedBy, Sumner Tunnel]
-
A.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
B.
Adams Tunnel
Adams Tunnel is a major transmountain water diversion tunnel in Colorado that conveys Colorado River water beneath the Continental Divide to the eastern slope as part of a large federal water project.
-
C.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
D.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
E.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
- 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: Sumner Tunnel Target entity description: The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
-
A.
Bosley Tunnel
Bosley Tunnel is a historic narrowboat canal tunnel in Cheshire, England, forming part of the Macclesfield Canal navigation route.
-
B.
Adams Tunnel
Adams Tunnel is a major transmountain water diversion tunnel in Colorado that conveys Colorado River water beneath the Continental Divide to the eastern slope as part of a large federal water project.
-
C.
O'Neill Tunnel
The O'Neill Tunnel is a major highway tunnel in downtown Boston that carries Interstate 93 beneath the city as part of the Big Dig project.
-
D.
Clyde Tunnel
The Clyde Tunnel is a road tunnel in Glasgow, Scotland, carrying vehicular traffic beneath the River Clyde to connect the city’s north and south banks.
-
E.
Robertson Tunnel
Robertson Tunnel is a major light rail tunnel in Portland, Oregon, carrying MAX trains through the West Hills between downtown and the city’s western suburbs.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
road tunnel
ⓘ
transport infrastructure ⓘ |
| carries | vehicular traffic ⓘ |
| connects |
East Boston
ⓘ
linked to:
East Boston, Massachusetts
downtown Boston ⓘ
linked to:
Downtown Boston
|
| crossesUnder | Boston Harbor ⓘ |
| hasDirectionality | one-way ⓘ |
| hasLanes | 2 ⓘ |
| hasSignificance | major access route between East Boston and downtown ⓘ |
| hasStructureType | bored tunnel ⓘ |
| hasTollCollection | electronic tolling ⓘ |
| hasUse |
automobile traffic
ⓘ
truck traffic ⓘ |
| isParallelTo |
Callahan Tunnel
ⓘ
linked to:
Sumner Tunnel
|
| isTollFacility | yes ⓘ |
| isUnder | Boston Harbor ⓘ |
| locatedIn |
Boston
ⓘ
linked to:
Boston, Massachusetts
Massachusetts ⓘ United States ⓘ
linked to:
United States of America
|
| locatedInNeighborhood |
East Boston
ⓘ
linked to:
East Boston, Massachusetts
North End ⓘ |
| maintainedBy | Massachusetts Department of Transportation ⓘ |
| namedAfter | William H. Sumner ⓘ |
| opened | 1934 ⓘ |
| operatedBy |
MassDOT Highway Division
ⓘ
linked to:
Massachusetts Department of Transportation
|
| partOf |
Boston transportation network
ⓘ
regional highway system ⓘ |
| passesUnder | Boston Harbor shipping channels ⓘ |
| serves | Logan International Airport traffic ⓘ |
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: Sumner Tunnel Description of subject: The Sumner Tunnel is a major vehicular tunnel in Boston that carries traffic under Boston Harbor between East Boston and downtown.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Sumner Tunnel
linked to: Sumner Tunnel
linked to: Sumner Tunnel
linked to: Sumner Tunnel