Liberty Bridge
E498835
Liberty Bridge is a major steel cantilever bridge in Pittsburgh, Pennsylvania, carrying vehicular traffic between downtown and the city's South Hills across the Monongahela River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Liberty Bridge canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2825717 — 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: Liberty Bridge Context triple: [Monongahela River, hasBridge, Liberty Bridge]
-
A.
Liberty Bridge
Liberty Bridge is a distinctive pedestrian suspension bridge in downtown Greenville, South Carolina, renowned for its curved design and views over Falls Park on the Reedy.
-
B.
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.
-
C.
Jones Bridge
Jones Bridge is a historic neoclassical bridge in Manila, Philippines, known for connecting key districts across the Pasig River and serving as an iconic city landmark.
-
D.
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.
-
E.
Victory Bridge
Victory Bridge is a vehicular bridge in New Jersey that spans the Raritan River, linking the cities of Perth Amboy and Sayreville.
- 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: Liberty Bridge Target entity description: Liberty Bridge is a major steel cantilever bridge in Pittsburgh, Pennsylvania, carrying vehicular traffic between downtown and the city's South Hills across the Monongahela River.
-
A.
Liberty Bridge
Liberty Bridge is a distinctive pedestrian suspension bridge in downtown Greenville, South Carolina, renowned for its curved design and views over Falls Park on the Reedy.
-
B.
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.
-
C.
Jones Bridge
Jones Bridge is a historic neoclassical bridge in Manila, Philippines, known for connecting key districts across the Pasig River and serving as an iconic city landmark.
-
D.
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.
-
E.
Victory Bridge
Victory Bridge is a vehicular bridge in New Jersey that spans the Raritan River, linking the cities of Perth Amboy and Sayreville.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
bridge
ⓘ
steel cantilever bridge ⓘ |
| carries | vehicular traffic ⓘ |
| city |
Pittsburgh, Pennsylvania
ⓘ
surface form:
Pittsburgh
|
| connectedTo | Liberty Tunnel NERFINISHED ⓘ |
| connects |
Downtown Pittsburgh
NERFINISHED
ⓘ
South Hills NERFINISHED ⓘ |
| constructionStartDate | 1926 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Monongahela River NERFINISHED ⓘ |
| crossesAt | between Downtown Pittsburgh and the South Hills ⓘ |
| design | cantilever bridge ⓘ |
| hasDeckType | roadway deck ⓘ |
| hasFunction | urban traffic artery ⓘ |
| hasHistoricalSignificance | early 20th-century steel cantilever bridge in Pittsburgh ⓘ |
| hasLanes | 4 ⓘ |
| hasStructureType | fixed bridge ⓘ |
| hasToll | no ⓘ |
| hasUsage | road bridge ⓘ |
| isMajorCrossingOf | Monongahela River in Pittsburgh NERFINISHED ⓘ |
| isOneOf | major bridges over the Monongahela River in Pittsburgh ⓘ |
| isPartOfTransportNetwork | Pittsburgh road network ⓘ |
| locatedIn |
Pittsburgh, Pennsylvania
ⓘ
United States of America ⓘ
surface form:
United States
|
| maintainedBy | Pennsylvania Department of Transportation NERFINISHED ⓘ |
| material | steel ⓘ |
| namedAfter | Liberty Tunnel NERFINISHED ⓘ |
| officialName | Liberty Bridge NERFINISHED ⓘ |
| opened | 1928 ⓘ |
| openedToTraffic | March 27, 1928 ⓘ |
| owner | Commonwealth of Pennsylvania NERFINISHED ⓘ |
| partOf | Pennsylvania Route 3069 NERFINISHED ⓘ |
| regionServed |
Downtown Pittsburgh central business district
NERFINISHED
ⓘ
South Hills of Pittsburgh NERFINISHED ⓘ |
| state | Pennsylvania ⓘ |
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: Liberty Bridge Description of subject: Liberty Bridge is a major steel cantilever bridge in Pittsburgh, Pennsylvania, carrying vehicular traffic between downtown and the city's South Hills across the Monongahela River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.