Upper St. Anthony Falls Lock and Dam
E362881
The Upper St. Anthony Falls Lock and Dam is a former U.S. Army Corps of Engineers navigation structure on the Mississippi River in Minneapolis that once enabled commercial barge traffic to bypass Saint Anthony Falls.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Upper St. Anthony Falls Lock and Dam canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3447763 — 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: Upper St. Anthony Falls Lock and Dam Context triple: [Saint Anthony Falls, hasPart, Upper St. Anthony Falls Lock and Dam]
-
A.
Saint Anthony Falls
Saint Anthony Falls is a historic waterfall on the Mississippi River in Minneapolis that powered the city’s early flour and saw milling industries and shaped its development.
-
B.
Swift Rapids Lock
Swift Rapids Lock is a large lock station on Ontario’s Trent–Severn Waterway, notable for its significant lift and remote, scenic setting.
-
C.
Lockport Lock and Dam
Lockport Lock and Dam is a major lock and dam complex on the Chicago Sanitary and Ship Canal that controls water levels, aids navigation, and helps manage flood and wastewater flows between the Chicago area and the Des Plaines River.
-
D.
Webbers Falls Lock and Dam
Webbers Falls Lock and Dam is a navigation and flood-control structure on the Arkansas River in Oklahoma that forms part of the McClellan–Kerr Arkansas River Navigation System.
-
E.
American Falls Dam
American Falls Dam is a major irrigation and hydroelectric dam in southeastern Idaho that creates the American Falls Reservoir on the Snake River.
- 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: Upper St. Anthony Falls Lock and Dam Target entity description: The Upper St. Anthony Falls Lock and Dam is a former U.S. Army Corps of Engineers navigation structure on the Mississippi River in Minneapolis that once enabled commercial barge traffic to bypass Saint Anthony Falls.
-
A.
Saint Anthony Falls
Saint Anthony Falls is a historic waterfall on the Mississippi River in Minneapolis that powered the city’s early flour and saw milling industries and shaped its development.
-
B.
Swift Rapids Lock
Swift Rapids Lock is a large lock station on Ontario’s Trent–Severn Waterway, notable for its significant lift and remote, scenic setting.
-
C.
Lockport Lock and Dam
Lockport Lock and Dam is a major lock and dam complex on the Chicago Sanitary and Ship Canal that controls water levels, aids navigation, and helps manage flood and wastewater flows between the Chicago area and the Des Plaines River.
-
D.
Webbers Falls Lock and Dam
Webbers Falls Lock and Dam is a navigation and flood-control structure on the Arkansas River in Oklahoma that forms part of the McClellan–Kerr Arkansas River Navigation System.
-
E.
American Falls Dam
American Falls Dam is a major irrigation and hydroelectric dam in southeastern Idaho that creates the American Falls Reservoir on the Snake River.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
former transportation infrastructure
ⓘ
lock and dam ⓘ navigation structure ⓘ |
| city | Minneapolis ⓘ |
| closureReason | prevention of invasive Asian carp migration upstream ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| function | allowed vessels to bypass Saint Anthony Falls ⓘ |
| hasPart |
concrete dam
ⓘ
navigation lock ⓘ |
| locatedIn |
Hennepin County, Minnesota
ⓘ
linked to:
Hennepin County
Minneapolis, Minnesota ⓘ
linked to:
Minneapolis
|
| locatedNear | Saint Anthony Falls ⓘ |
| locatedOn | Mississippi River ⓘ |
| maintainedBy |
United States Army Corps of Engineers
ⓘ
linked to:
U.S. Army Corps of Engineers
|
| nearbyCityFeature | downtown Minneapolis ⓘ |
| nearbyStructure |
Lower St. Anthony Falls Lock and Dam
ⓘ
St. Anthony Falls ⓘ
linked to:
Saint Anthony Falls
|
| operator |
United States Army Corps of Engineers
ⓘ
linked to:
U.S. Army Corps of Engineers
|
| ownedBy |
United States federal government
ⓘ
linked to:
United States government
|
| partOf | Upper Mississippi River navigation system ⓘ |
| purpose |
commercial barge traffic
ⓘ
navigation ⓘ |
| region | Midwestern United States ⓘ |
| riverMile | approximately 853.9 miles above the Ohio River ⓘ |
| state | Minnesota ⓘ |
| status |
closed to navigation
ⓘ
former lock and dam ⓘ |
| usedFor | commercial barge traffic on the Mississippi River ⓘ |
| watercourse | Mississippi River ⓘ |
| waterway |
Upper Mississippi River
ⓘ
linked to:
Mississippi River
|
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: Upper St. Anthony Falls Lock and Dam Description of subject: The Upper St. Anthony Falls Lock and Dam is a former U.S. Army Corps of Engineers navigation structure on the Mississippi River in Minneapolis that once enabled commercial barge traffic to bypass Saint Anthony Falls.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.