Mississippi River (Ontario)
E590472
The Mississippi River in Ontario is a Canadian river that flows through eastern Ontario, including Lanark County, before emptying into the Ottawa River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mississippi River (Ontario) canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6083127 — 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: Mississippi River (Ontario) Context triple: [Lanark County, traversedByRiver, Mississippi River (Ontario)]
-
A.
St. Mary's River
St. Mary's River is a tidal river in southern Maryland that flows through St. Mary's County into the Potomac River and Chesapeake Bay, supporting local ecosystems and recreation.
-
B.
St. Louis River
The St. Louis River is a major river in northeastern Minnesota and northwestern Wisconsin that flows into Lake Superior, forming part of the Duluth–Superior harbor and extensive estuary system.
-
C.
St. Marys River
The St. Marys River is a vital waterway forming part of the U.S.–Canada border, connecting Lake Superior to Lake Huron and hosting major shipping locks at Sault Ste. Marie.
-
D.
St. Marys River
The St. Marys River is a tributary in the Midwestern United States that flows through northeastern Indiana and joins with other rivers at Fort Wayne to form the Maumee River.
-
E.
St. Marys River
The St. Marys River is a coastal river in the southeastern United States that forms part of the border between Florida and Georgia before emptying into the Atlantic Ocean.
- 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: Mississippi River (Ontario) Target entity description: The Mississippi River in Ontario is a Canadian river that flows through eastern Ontario, including Lanark County, before emptying into the Ottawa River.
-
A.
St. Mary's River
St. Mary's River is a tidal river in southern Maryland that flows through St. Mary's County into the Potomac River and Chesapeake Bay, supporting local ecosystems and recreation.
-
B.
St. Louis River
The St. Louis River is a major river in northeastern Minnesota and northwestern Wisconsin that flows into Lake Superior, forming part of the Duluth–Superior harbor and extensive estuary system.
-
C.
St. Marys River
The St. Marys River is a vital waterway forming part of the U.S.–Canada border, connecting Lake Superior to Lake Huron and hosting major shipping locks at Sault Ste. Marie.
-
D.
St. Marys River
The St. Marys River is a tributary in the Midwestern United States that flows through northeastern Indiana and joins with other rivers at Fort Wayne to form the Maumee River.
-
E.
St. Marys River
The St. Marys River is a coastal river in the southeastern United States that forms part of the border between Florida and Georgia before emptying into the Atlantic Ocean.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | Canada ⓘ |
| country | Canada ⓘ |
| distinctFrom | Mississippi River (United States) NERFINISHED ⓘ |
| drainageBasin | Ottawa River drainage basin NERFINISHED ⓘ |
| flowsThrough |
Almonte
NERFINISHED
ⓘ
Carleton Place NERFINISHED ⓘ Frontenac County NERFINISHED ⓘ Lanark County NERFINISHED ⓘ Leeds and Grenville United Counties NERFINISHED ⓘ Mississippi Lake NERFINISHED ⓘ Pakenham NERFINISHED ⓘ |
| hasBasinPopulationCentre |
Almonte
NERFINISHED
ⓘ
Carleton Place NERFINISHED ⓘ Perth, Ontario NERFINISHED ⓘ |
| hasHydroelectricUse | small hydroelectric generating stations ⓘ |
| hasLength | approximately 200 kilometres ⓘ |
| hasMajorLake | Mississippi Lake NERFINISHED ⓘ |
| hasMajorTributary |
Clyde River (Ontario)
NERFINISHED
ⓘ
Fall River (Ontario) NERFINISHED ⓘ Indian River (Ontario) NERFINISHED ⓘ |
| hasName | Mississippi River NERFINISHED ⓘ |
| hasRecreationUse |
boating
ⓘ
canoeing ⓘ fishing ⓘ |
| hasSource | Upper Mazinaw Lake NERFINISHED ⓘ |
| hasWatershedArea | approximately 3750 square kilometres ⓘ |
| locatedIn |
Lanark Highlands
NERFINISHED
ⓘ
Mississippi Mills NERFINISHED ⓘ Ontario ⓘ eastern Ontario NERFINISHED ⓘ |
| managedBy | Mississippi Valley Conservation Authority NERFINISHED ⓘ |
| mouth | Ottawa River NERFINISHED ⓘ |
| partOf | Ottawa River drainage basin NERFINISHED ⓘ |
| region | Eastern Ontario NERFINISHED ⓘ |
| tributaryOf | Ottawa River 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: Mississippi River (Ontario) Description of subject: The Mississippi River in Ontario is a Canadian river that flows through eastern Ontario, including Lanark County, before emptying into the Ottawa River.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.