Sebago Lake
E271278
Sebago Lake is a large, deep freshwater lake in southern Maine known for its clear waters, recreational activities, and role as a major regional water supply.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sebago Lake canonical | 13 |
How this entity was disambiguated
This entity first appeared as the object of triple T2388879 — 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: Sebago Lake Context triple: [Southern Maine, contains, Sebago Lake]
-
A.
Sebasticook Lake
Sebasticook Lake is a freshwater lake in central Maine known for its recreational fishing, boating, and wildlife habitat near the town of Newport.
-
B.
Messalonskee Lake
Messalonskee Lake is a large freshwater lake in central Maine known for recreation, fishing, and its scenic shoreline.
-
C.
Lake Winnipesaukee
Lake Winnipesaukee is a large, scenic glacial lake in central New Hampshire known for its islands, recreational boating, and role as a popular summer vacation destination.
-
D.
Oneida Lake
Oneida Lake is a large, shallow lake in central New York known for its recreational fishing, boating, and role as an important link in the region’s waterways.
-
E.
Portage Lake, Maine
Portage Lake, Maine is a small rural town in northern Aroostook County known for its scenic lake, outdoor recreation, and forested surroundings.
- 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: Sebago Lake Target entity description: Sebago Lake is a large, deep freshwater lake in southern Maine known for its clear waters, recreational activities, and role as a major regional water supply.
-
A.
Sebasticook Lake
Sebasticook Lake is a freshwater lake in central Maine known for its recreational fishing, boating, and wildlife habitat near the town of Newport.
-
B.
Messalonskee Lake
Messalonskee Lake is a large freshwater lake in central Maine known for recreation, fishing, and its scenic shoreline.
-
C.
Lake Winnipesaukee
Lake Winnipesaukee is a large, scenic glacial lake in central New Hampshire known for its islands, recreational boating, and role as a popular summer vacation destination.
-
D.
Oneida Lake
Oneida Lake is a large, shallow lake in central New York known for its recreational fishing, boating, and role as an important link in the region’s waterways.
-
E.
Portage Lake, Maine
Portage Lake, Maine is a small rural town in northern Aroostook County known for its scenic lake, outdoor recreation, and forested surroundings.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
freshwater lake
ⓘ
lake ⓘ |
| adjacentTo | Sebago Lake State Park ⓘ |
| averageDepth | approximately 101 feet ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| elevationAboveSeaLevel |
approximately 267 feet
ⓘ
approximately 81 meters ⓘ |
| hasFishSpecies |
lake trout
ⓘ
lake whitefish ⓘ landlocked salmon ⓘ smallmouth bass ⓘ |
| hasIsland |
Frye Island
ⓘ
Thompson Point islands ⓘ |
| hasNearbyTown |
Casco, Maine
ⓘ
Naples, Maine NERFINISHED ⓘ Raymond, Maine NERFINISHED ⓘ Sebago, Maine ⓘ Standish, Maine NERFINISHED ⓘ |
| hasProtectedArea | Sebago Lake State Park ⓘ |
| inflow |
Crooked River
ⓘ
Jordan River ⓘ Northwest River ⓘ Songo River ⓘ |
| isOneOf |
deepest lakes in Maine
ⓘ
largest lakes in Maine ⓘ |
| knownFor |
clear water
ⓘ
recreational activities ⓘ regional drinking water supply ⓘ |
| locatedIn |
Cumberland County, Maine
ⓘ
Maine ⓘ |
| locatedInRegion | southern Maine ⓘ |
| locatedNear | Portland, Maine ⓘ |
| locatedOnContinent | North America ⓘ |
| maximumDepth |
approximately 316 feet
ⓘ
approximately 96 meters ⓘ |
| municipalWaterSupplyFor |
Greater Portland, Maine
ⓘ
Greater Portland, Maine ⓘ
surface form:
Portland, Maine metropolitan area
|
| outflow | Presumpscot River ⓘ |
| partOf |
Presumpscot River
ⓘ
surface form:
Presumpscot River watershed
|
| recreationManagedBy | Maine Department of Agriculture, Conservation and Forestry ⓘ |
| shoreLength | approximately 105 miles ⓘ |
| surfaceArea |
approximately 117 square kilometers
ⓘ
approximately 45 square miles ⓘ |
| usedFor |
boating
ⓘ
camping ⓘ drinking water ⓘ fishing ⓘ ice fishing ⓘ snowmobiling ⓘ swimming ⓘ |
| waterQuality | high ⓘ |
| 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: Sebago Lake Description of subject: Sebago Lake is a large, deep freshwater lake in southern Maine known for its clear waters, recreational activities, and role as a major regional water supply.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Standish, Maine
subject surface form:
Standish, Maine
subject surface form:
Cumberland County, Maine