Keystone Lake
E529221
Keystone Lake is a large reservoir in northeastern Oklahoma popular for recreation, fishing, and flood control along the Arkansas River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Keystone Lake canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T2793380 — 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: Keystone Lake Context triple: [Green Country, contains, Keystone Lake]
-
A.
Fairview Lake
Fairview Lake is a small recreational and residential lake located in the city of Fairview in Multnomah County, Oregon.
-
B.
Stella Lake
Stella Lake is a small alpine lake in Nevada’s Great Basin National Park, known for its scenic mountain backdrop and tranquil high-elevation setting.
-
C.
Korsman Lake
Korsman Lake is a small urban lake and bird sanctuary located in the suburb of Benoni in Gauteng, South Africa.
-
D.
Heart Lake
Heart Lake is a scenic mountain lake in New York’s Adirondack High Peaks region, popular for hiking, paddling, and views of surrounding peaks.
-
E.
Peck Lake
Peck Lake is a scenic freshwater lake in the southern Adirondack region of Fulton County, New York, popular for boating, fishing, and lakeside recreation.
- 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: Keystone Lake Target entity description: Keystone Lake is a large reservoir in northeastern Oklahoma popular for recreation, fishing, and flood control along the Arkansas River.
-
A.
Fairview Lake
Fairview Lake is a small recreational and residential lake located in the city of Fairview in Multnomah County, Oregon.
-
B.
Stella Lake
Stella Lake is a small alpine lake in Nevada’s Great Basin National Park, known for its scenic mountain backdrop and tranquil high-elevation setting.
-
C.
Korsman Lake
Korsman Lake is a small urban lake and bird sanctuary located in the suburb of Benoni in Gauteng, South Africa.
-
D.
Heart Lake
Heart Lake is a scenic mountain lake in New York’s Adirondack High Peaks region, popular for hiking, paddling, and views of surrounding peaks.
-
E.
Peck Lake
Peck Lake is a scenic freshwater lake in the southern Adirondack region of Fulton County, New York, popular for boating, fishing, and lakeside recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| constructionStartOfDam | 1956 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createdBy | Keystone Dam NERFINISHED ⓘ |
| formedByRiver |
Cimarron River
NERFINISHED
ⓘ
Salt Creek NERFINISHED ⓘ |
| hasActivity |
jet skiing
ⓘ
sailing ⓘ water skiing ⓘ |
| hasFishSpecies |
catfish
ⓘ
crappie ⓘ largemouth bass ⓘ smallmouth bass ⓘ striped bass ⓘ sunfish ⓘ white bass ⓘ |
| hasRecreationArea | Keystone State Park (Oklahoma) NERFINISHED ⓘ |
| impoundedBy | Keystone Dam NERFINISHED ⓘ |
| locatedIn |
Oklahoma
NERFINISHED
ⓘ
northeastern Oklahoma ⓘ |
| locatedInCounty |
Creek County, Oklahoma
NERFINISHED
ⓘ
Osage County, Oklahoma NERFINISHED ⓘ Pawnee County, Oklahoma NERFINISHED ⓘ Tulsa County, Oklahoma NERFINISHED ⓘ |
| locatedOnRiver | Arkansas River NERFINISHED ⓘ |
| maximumDepth | approximately 73 feet ⓘ |
| nearCity |
Cleveland, Oklahoma
NERFINISHED
ⓘ
Mannford, Oklahoma NERFINISHED ⓘ Sand Springs, Oklahoma NERFINISHED ⓘ Tulsa, Oklahoma NERFINISHED ⓘ |
| openedForUse | 1968 ⓘ |
| operator | U.S. Army Corps of Engineers NERFINISHED ⓘ |
| partOf | Arkansas River basin NERFINISHED ⓘ |
| purpose |
fish and wildlife management
ⓘ
flood control ⓘ hydroelectric power generation ⓘ recreation ⓘ water supply ⓘ |
| shorelineLength | approximately 330 miles ⓘ |
| surfaceArea | approximately 26,000 acres ⓘ |
| usedFor |
boating
ⓘ
camping ⓘ fishing ⓘ hunting in surrounding areas ⓘ swimming ⓘ |
| watercourse | Arkansas River NERFINISHED ⓘ |
| yearOfCompletion | 1964 ⓘ |
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: Keystone Lake Description of subject: Keystone Lake is a large reservoir in northeastern Oklahoma popular for recreation, fishing, and flood control along the Arkansas River.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Green Country