West Boston Bridge
E311325
West Boston Bridge was a 19th-century bridge over the Charles River in Boston that historically connected Boston to Cambridge before being superseded by the Longfellow Bridge.
All labels observed (2)
| Label | Occurrences |
|---|---|
| West Boston Bridge canonical | 1 |
| West-Boston Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1642688 — 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: West Boston Bridge Context triple: [Longfellow Bridge, replaced, West Boston Bridge]
-
A.
Maurice J. Tobin Memorial Bridge
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.
-
B.
Piscataqua River Bridge
The Piscataqua River Bridge is a major highway bridge carrying Interstate 95 over the Piscataqua River between Maine and New Hampshire in the northeastern United States.
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C.
Mystic River Bridge
The Mystic River Bridge, officially known as the Maurice J. Tobin Memorial Bridge, is a major steel cantilever roadway bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
-
D.
St. Johns Bridge
St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
-
E.
Commonwealth Avenue Bridge
The Commonwealth Avenue Bridge is a major road bridge in Canberra, Australia, carrying Commonwealth Avenue across Lake Burley Griffin and linking the city centre with the Parliamentary Triangle.
- 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: West Boston Bridge Target entity description: West Boston Bridge was a 19th-century bridge over the Charles River in Boston that historically connected Boston to Cambridge before being superseded by the Longfellow Bridge.
-
A.
Maurice J. Tobin Memorial Bridge
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.
-
B.
Piscataqua River Bridge
The Piscataqua River Bridge is a major highway bridge carrying Interstate 95 over the Piscataqua River between Maine and New Hampshire in the northeastern United States.
-
C.
Mystic River Bridge
The Mystic River Bridge, officially known as the Maurice J. Tobin Memorial Bridge, is a major steel cantilever roadway bridge in Boston, Massachusetts, carrying U.S. Route 1 over the Mystic River between Charlestown and Chelsea.
-
D.
St. Johns Bridge
St. Johns Bridge is a historic steel suspension bridge in Portland, Oregon, noted for its striking Gothic-style towers and scenic span over the Willamette River.
-
E.
Commonwealth Avenue Bridge
The Commonwealth Avenue Bridge is a major road bridge in Canberra, Australia, carrying Commonwealth Avenue across Lake Burley Griffin and linking the city centre with the Parliamentary Triangle.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
bridge
ⓘ
road bridge ⓘ |
| alsoKnownAs |
West Boston Bridge
ⓘ
surface form:
West-Boston Bridge
|
| carried | road traffic ⓘ |
| connects |
Boston
ⓘ
Cambridge, Massachusetts ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Charles River ⓘ |
| demolished | 1906 ⓘ |
| hasToll | true ⓘ |
| historicalEra | 19th century ⓘ |
| length | about 1800 meters ⓘ |
| locatedIn |
Boston, Massachusetts
ⓘ
surface form:
Boston
Cambridge, Massachusetts ⓘ Massachusetts ⓘ United States of America ⓘ
surface form:
United States
|
| material | wood ⓘ |
| opened | 1793 ⓘ |
| precededBy | ferry across the Charles River ⓘ |
| replacedBy | Longfellow Bridge ⓘ |
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: West Boston Bridge Description of subject: West Boston Bridge was a 19th-century bridge over the Charles River in Boston that historically connected Boston to Cambridge before being superseded by the Longfellow Bridge.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
West-Boston Bridge