Duluth Aerial Lift Bridge
E442302
The Duluth Aerial Lift Bridge is a historic vertical-lift bridge in Duluth, Minnesota, that spans the Duluth Ship Canal and serves as an iconic landmark of the city’s harbor.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Duluth Aerial Lift Bridge canonical | 2 |
| Aerial Lift Bridge (Duluth) | 1 |
| Aerial Lift Bridge area of Duluth | 1 |
| Duluth–Superior harbor crossings | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3486609 — 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: Duluth Aerial Lift Bridge Context triple: [Aerial Lift Bridge, alsoKnownAs, Duluth Aerial Lift Bridge]
-
A.
Whirlpool Rapids Bridge
Whirlpool Rapids Bridge is a historic steel arch bridge connecting Niagara Falls, New York, and Niagara Falls, Ontario, spanning the Niagara Gorge just downstream from the famous falls.
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B.
Portage Lake Lift Bridge
The Portage Lake Lift Bridge is a prominent vertical-lift bridge in Michigan’s Upper Peninsula that connects the cities of Houghton and Hancock across the Keweenaw Waterway.
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C.
Mackinac Bridge
The Mackinac Bridge is a major suspension bridge in Michigan that connects the state's Upper and Lower Peninsulas and is one of the longest suspension bridges in the world.
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D.
Sault Ste. Marie Canal Swing Bridge
The Sault Ste. Marie Canal Swing Bridge is a historic movable bridge in Sault Ste. Marie, Ontario, that carries road and rail traffic across the canal near the St. Marys River.
-
E.
Charles Berry Bascule Bridge
The Charles Berry Bascule Bridge is a historic movable drawbridge in Lorain, Ohio, known for carrying U.S. Route 6 over the Black River and serving as a prominent local landmark.
- 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: Duluth Aerial Lift Bridge Target entity description: The Duluth Aerial Lift Bridge is a historic vertical-lift bridge in Duluth, Minnesota, that spans the Duluth Ship Canal and serves as an iconic landmark of the city’s harbor.
-
A.
Whirlpool Rapids Bridge
Whirlpool Rapids Bridge is a historic steel arch bridge connecting Niagara Falls, New York, and Niagara Falls, Ontario, spanning the Niagara Gorge just downstream from the famous falls.
-
B.
Portage Lake Lift Bridge
The Portage Lake Lift Bridge is a prominent vertical-lift bridge in Michigan’s Upper Peninsula that connects the cities of Houghton and Hancock across the Keweenaw Waterway.
-
C.
Mackinac Bridge
The Mackinac Bridge is a major suspension bridge in Michigan that connects the state's Upper and Lower Peninsulas and is one of the longest suspension bridges in the world.
-
D.
Sault Ste. Marie Canal Swing Bridge
The Sault Ste. Marie Canal Swing Bridge is a historic movable bridge in Sault Ste. Marie, Ontario, that carries road and rail traffic across the canal near the St. Marys River.
-
E.
Charles Berry Bascule Bridge
The Charles Berry Bascule Bridge is a historic movable drawbridge in Lorain, Ohio, known for carrying U.S. Route 6 over the Black River and serving as a prominent local landmark.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic landmark
ⓘ
movable bridge ⓘ road bridge ⓘ tourist attraction ⓘ vertical-lift bridge ⓘ |
| alsoKnownAs |
Aerial Lift Bridge
NERFINISHED
ⓘ
Duluth Aerial Bridge NERFINISHED ⓘ |
| city | Duluth NERFINISHED ⓘ |
| connects |
Duluth mainland
ⓘ
Minnesota Point NERFINISHED ⓘ |
| convertedTo | vertical-lift bridge ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses |
Duluth Harbor Basin
NERFINISHED
ⓘ
Duluth Ship Canal NERFINISHED ⓘ |
| culturalSignificance | frequently depicted in Duluth imagery and media ⓘ |
| currentUse | carrying a roadway deck for vehicles and pedestrians ⓘ |
| designer | Thomas F. McGilvray NERFINISHED ⓘ |
| engineer | C.A.P. Turner NERFINISHED ⓘ |
| function |
allows ship passage
ⓘ
carries road traffic ⓘ |
| hasFeature |
control house
ⓘ
lift span ⓘ |
| hasLighting | illuminated at night ⓘ |
| heritageStatus | listed on the National Register of Historic Places ⓘ |
| locatedIn |
Duluth, Minnesota
NERFINISHED
ⓘ
Minnesota ⓘ St. Louis County, Minnesota NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOnWaterbody | Lake Superior NERFINISHED ⓘ |
| maintainedBy | City of Duluth NERFINISHED ⓘ |
| material | steel ⓘ |
| near | Canal Park, Duluth NERFINISHED ⓘ |
| notableFor |
frequent lifting for Great Lakes freighters
ⓘ
iconic silhouette ⓘ |
| NRHPListingYear | 1973 ⓘ |
| opened | 1905 ⓘ |
| originalDesign | aerial transfer bridge ⓘ |
| originalUse | carrying a gondola car for passengers and vehicles ⓘ |
| partOf | Duluth harbor NERFINISHED ⓘ |
| rebuiltAsLiftBridge | 1929 ⓘ |
| region | Great Lakes region NERFINISHED ⓘ |
| spans | Duluth Ship Canal NERFINISHED ⓘ |
| state | Minnesota ⓘ |
| structureType | truss bridge ⓘ |
| symbolOf | Duluth NERFINISHED ⓘ |
| tourismRole | major visitor attraction in Duluth ⓘ |
| trafficType | vehicular traffic ⓘ |
| waterwayClass | Great Lakes–St. Lawrence Seaway system NERFINISHED ⓘ |
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: Duluth Aerial Lift Bridge Description of subject: The Duluth Aerial Lift Bridge is a historic vertical-lift bridge in Duluth, Minnesota, that spans the Duluth Ship Canal and serves as an iconic landmark of the city’s harbor.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Aerial Lift Bridge (Duluth)
this entity surface form:
Aerial Lift Bridge area of Duluth
this entity surface form:
Duluth–Superior harbor crossings