Lac Manicouagan
E489135
Lac Manicouagan is a large annular reservoir in central Quebec, Canada, formed within one of the world’s largest and most distinctive meteorite impact craters.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lac Manicouagan canonical | 2 |
| Manicouagan Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4988234 — 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: Lac Manicouagan Context triple: [Labrador Peninsula, contains, Lac Manicouagan]
-
A.
Lake Saint-Pierre
Lake Saint-Pierre is a broad, shallow widening of the Saint Lawrence River in Quebec, recognized as a UNESCO Biosphere Reserve for its rich wetlands and biodiversity.
-
B.
Lesser Slave Lake
Lesser Slave Lake is a large, shallow freshwater lake in north-central Alberta, Canada, known for its fishing, birdwatching, and surrounding provincial parks.
-
C.
Lake Saint-Louis
Lake Saint-Louis is a broad fluvial lake in southwestern Quebec, Canada, formed by the widening of the Saint Lawrence River near Montreal and known for its recreational boating and rich aquatic habitats.
-
D.
Lac Vert
Lac Vert is a small, picturesque alpine lake in Passy, Haute-Savoie, renowned for its striking emerald-green waters and surrounding mountain scenery.
-
E.
Lac des Deux Montagnes
Lac des Deux Montagnes is a large lake in southwestern Quebec, Canada, that serves as a widening of the Ottawa River and a key feature of the waterways near Montreal.
- 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: Lac Manicouagan Target entity description: Lac Manicouagan is a large annular reservoir in central Quebec, Canada, formed within one of the world’s largest and most distinctive meteorite impact craters.
-
A.
Lake Saint-Pierre
Lake Saint-Pierre is a broad, shallow widening of the Saint Lawrence River in Quebec, recognized as a UNESCO Biosphere Reserve for its rich wetlands and biodiversity.
-
B.
Lesser Slave Lake
Lesser Slave Lake is a large, shallow freshwater lake in north-central Alberta, Canada, known for its fishing, birdwatching, and surrounding provincial parks.
-
C.
Lake Saint-Louis
Lake Saint-Louis is a broad fluvial lake in southwestern Quebec, Canada, formed by the widening of the Saint Lawrence River near Montreal and known for its recreational boating and rich aquatic habitats.
-
D.
Lac Vert
Lac Vert is a small, picturesque alpine lake in Passy, Haute-Savoie, renowned for its striking emerald-green waters and surrounding mountain scenery.
-
E.
Lac des Deux Montagnes
Lac des Deux Montagnes is a large lake in southwestern Quebec, Canada, that serves as a widening of the Ottawa River and a key feature of the waterways near Montreal.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
annular lake
ⓘ
impact crater lake ⓘ reservoir ⓘ |
| administrativeRegion | Côte-Nord NERFINISHED ⓘ |
| age | about 214 million years ⓘ |
| alsoKnownAs |
Eye of Quebec
NERFINISHED
ⓘ
Manicouagan Reservoir NERFINISHED ⓘ |
| basinCountry | Canada ⓘ |
| bedrock | Precambrian rocks ⓘ |
| belongsTo | Canadian Shield NERFINISHED ⓘ |
| centralFeature | René-Levasseur Island NERFINISHED ⓘ |
| country | Canada ⓘ |
| createdBy | Manicouagan River damming ⓘ |
| ecosystemType | boreal forest surroundings ⓘ |
| elevation | about 350 metres above sea level ⓘ |
| formedBy | impact of a large asteroid ⓘ |
| formedIn | Manicouagan impact structure NERFINISHED ⓘ |
| geologicalPeriod | Late Triassic ⓘ |
| governedBy | Province of Quebec NERFINISHED ⓘ |
| hasDam | Manic-5 Dam NERFINISHED ⓘ |
| hasIsland | René-Levasseur Island NERFINISHED ⓘ |
| impactAgeEstimate | approximately 214 ± 1 million years ⓘ |
| impactCraterType | complex crater ⓘ |
| impactEnergy | very high-energy meteorite impact ⓘ |
| impactStructureDiameter | about 100 km ⓘ |
| inflow | Manicouagan River NERFINISHED ⓘ |
| isVisibleFrom | space ⓘ |
| locatedIn |
Côte-Nord region
NERFINISHED
ⓘ
Manicouagan Regional County Municipality NERFINISHED ⓘ Quebec NERFINISHED ⓘ central Quebec NERFINISHED ⓘ |
| locatedNorthOf | Baie-Comeau NERFINISHED ⓘ |
| locatedOnContinent | North America ⓘ |
| mappedBy | satellite imagery ⓘ |
| notableFor |
being one of the largest impact craters on Earth
ⓘ
distinctive ring-shaped appearance ⓘ |
| origin | meteorite impact ⓘ |
| outflow | Manicouagan River NERFINISHED ⓘ |
| partOf |
Manicouagan Reservoir
NERFINISHED
ⓘ
Manicouagan River watershed NERFINISHED ⓘ |
| reservoirDiameter | about 70 km ⓘ |
| shape | annular ⓘ |
| surfaceArea | over 1900 square kilometres ⓘ |
| usedFor |
flood control
ⓘ
hydroelectric power generation ⓘ recreation ⓘ |
| waterType | freshwater ⓘ |
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: Lac Manicouagan Description of subject: Lac Manicouagan is a large annular reservoir in central Quebec, Canada, formed within one of the world’s largest and most distinctive meteorite impact craters.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Manicouagan Reservoir