Lake Natoma
E179987
Lake Natoma is a man-made reservoir in Northern California popular for rowing, kayaking, and other water recreation, located near Folsom along the American River.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lake Natoma canonical | 5 |
| Lake Natoma State Recreation Area | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1561659 — 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: Lake Natoma Context triple: [American River, hasReservoir, Lake Natoma]
-
A.
Lake McKenzie
Lake McKenzie is a perched freshwater lake on K'gari (Fraser Island) in Queensland, Australia, renowned for its crystal-clear water and pure white silica sand.
-
B.
Titisee
Titisee is a scenic glacial lake and popular tourist destination in Germany’s Black Forest region, known for its clear waters, surrounding forests, and outdoor recreation.
-
C.
Lake Norman
Lake Norman is a large man-made reservoir in North Carolina known for boating, fishing, and upscale residential communities along its shoreline.
-
D.
Lake Martin
Lake Martin is a large, man-made reservoir in central Alabama known for its scenic shoreline, recreational boating, and lakeside communities.
-
E.
Savannah River
The Savannah River is a major waterway in the southeastern United States that forms much of the border between Georgia and South Carolina and flows 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: Lake Natoma Target entity description: Lake Natoma is a man-made reservoir in Northern California popular for rowing, kayaking, and other water recreation, located near Folsom along the American River.
-
A.
Lake McKenzie
Lake McKenzie is a perched freshwater lake on K'gari (Fraser Island) in Queensland, Australia, renowned for its crystal-clear water and pure white silica sand.
-
B.
Titisee
Titisee is a scenic glacial lake and popular tourist destination in Germany’s Black Forest region, known for its clear waters, surrounding forests, and outdoor recreation.
-
C.
Lake Norman
Lake Norman is a large man-made reservoir in North Carolina known for boating, fishing, and upscale residential communities along its shoreline.
-
D.
Lake Martin
Lake Martin is a large, man-made reservoir in central Alabama known for its scenic shoreline, recreational boating, and lakeside communities.
-
E.
Savannah River
The Savannah River is a major waterway in the southeastern United States that forms much of the border between Georgia and South Carolina and flows into the Atlantic Ocean.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ tourist attraction ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| createdBy |
Folsom Dam
ⓘ
Nimbus Dam ⓘ |
| hasActivityRestriction |
limited power boating
ⓘ
no personal watercraft ⓘ |
| hasFacility |
Black Miners Bar
ⓘ
Nimbus Flat State Recreation Area ⓘ bicycle and pedestrian trails ⓘ boat launch ramps ⓘ picnic areas ⓘ |
| hasFeature | no-wake speed limit for motorized boats ⓘ |
| hasTrail | Jedediah Smith Memorial Trail ⓘ |
| hasWildlife |
fish
ⓘ
raptors ⓘ waterfowl ⓘ |
| inflow |
American River (California)
ⓘ
surface form:
American River
|
| isDownstreamOf | Folsom Lake ⓘ |
| isUpstreamOf | Nimbus Dam ⓘ |
| knownFor |
calm water suitable for rowing
ⓘ
rowing regattas ⓘ scenic shoreline ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Northern California ⓘ Sacramento County, California NERFINISHED ⓘ |
| locatedNear |
Folsom
ⓘ
surface form:
Folsom, California
Rancho Cordova ⓘ
surface form:
Rancho Cordova, California
|
| managedBy | California Department of Parks and Recreation ⓘ |
| nearbyCity |
Folsom
ⓘ
surface form:
Folsom, California
Rancho Cordova ⓘ
surface form:
Rancho Cordova, California
|
| outflow |
American River (California)
ⓘ
surface form:
American River
|
| partOf |
American River Parkway
ⓘ
Folsom Lake (northern and eastern shores) ⓘ
surface form:
Folsom Lake State Recreation Area
|
| recreationAreaDesignation | state recreation area ⓘ |
| region | Sacramento metropolitan area ⓘ |
| river | American River ⓘ |
| usedFor |
canoeing
ⓘ
fishing ⓘ kayaking ⓘ recreation ⓘ rowing ⓘ sailing ⓘ stand-up paddleboarding ⓘ swimming ⓘ triathlon events ⓘ |
| waterBodyType | reservoir on the American 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: Lake Natoma Description of subject: Lake Natoma is a man-made reservoir in Northern California popular for rowing, kayaking, and other water recreation, located near Folsom along the American River.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lake Natoma State Recreation Area