Maurice J. Tobin Memorial Bridge
E100075
The Maurice J. Tobin Memorial Bridge is a major steel cantilever bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Maurice J. Tobin Memorial Bridge canonical | 3 |
| Tobin Bridge | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T514889 — 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: Maurice J. Tobin Memorial Bridge Context triple: [Tobin Bridge, officialName, Maurice J. Tobin Memorial Bridge]
-
A.
Lacey V. Murrow Memorial Bridge
The Lacey V. Murrow Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington, connecting Seattle to its eastern suburbs.
-
B.
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.
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C.
Theodore Roosevelt Bridge
The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
-
D.
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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E.
Arland D. Williams Jr. Memorial Bridge
The Arland D. Williams Jr. Memorial Bridge is a Potomac River crossing in Washington, D.C., named in honor of an Air Florida Flight 90 crash hero and carrying traffic as part of the 14th Street Bridge complex.
- 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: Maurice J. Tobin Memorial Bridge Target entity description: The Maurice J. Tobin Memorial Bridge is a major steel cantilever bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
-
A.
Lacey V. Murrow Memorial Bridge
The Lacey V. Murrow Memorial Bridge is a major floating bridge in Washington State that carries Interstate 90 across Lake Washington, connecting Seattle to its eastern suburbs.
-
B.
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.
-
C.
Theodore Roosevelt Bridge
The Theodore Roosevelt Bridge is a major highway bridge over the Potomac River in Washington, D.C., carrying traffic between the city and Arlington, Virginia.
-
D.
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.
-
E.
Arland D. Williams Jr. Memorial Bridge
The Arland D. Williams Jr. Memorial Bridge is a Potomac River crossing in Washington, D.C., named in honor of an Air Florida Flight 90 crash hero and carrying traffic as part of the 14th Street Bridge complex.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
cantilever bridge
ⓘ
road bridge ⓘ steel bridge ⓘ truss bridge ⓘ |
| alsoKnownAs | Tobin Bridge ⓘ |
| carries | U.S. Route 1 ⓘ |
| cityServed |
Boston, Massachusetts
ⓘ
Chelsea, Massachusetts ⓘ |
| connects |
Charlestown, Boston
ⓘ
linked to:
Charlestown neighborhood of Boston
Chelsea, Massachusetts ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Mystic River ⓘ |
| function | vehicular traffic ⓘ |
| hasToll | yes ⓘ |
| locatedIn |
Boston, Massachusetts
ⓘ
United States ⓘ
linked to:
United States of America
|
| maintainedBy | Massachusetts Department of Transportation ⓘ |
| material | steel ⓘ |
| namedAfter | Maurice J. Tobin ⓘ |
| numberOfDecks | 2 ⓘ |
| numberOfLanes | 6 ⓘ |
| numberOfRoadways | 2 ⓘ |
| officialName | Maurice J. Tobin Memorial Bridge ⓘ |
| opened | 1950 ⓘ |
| owner | Massachusetts Department of Transportation ⓘ |
| partOf |
U.S. Route 1 corridor
ⓘ
linked to:
U.S. Route 1
|
| regionServed | Greater Boston ⓘ |
| replaced | Chelsea Bridge ⓘ |
| state | Massachusetts ⓘ |
| tollDirection | southbound ⓘ |
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: Maurice J. Tobin Memorial Bridge Description of subject: The Maurice J. Tobin Memorial Bridge is a major steel cantilever bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Maurice J. Tobin Memorial Bridge
linked to: Maurice J. Tobin Memorial Bridge