Stillwater River
E692464
The Stillwater River is a tributary in central Massachusetts that helps supply water to the Wachusett Reservoir, an important component of the Greater Boston water system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stillwater River canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4892023 — 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: Stillwater River Context triple: [Wachusett Reservoir, inflow, Stillwater River]
-
A.
Stillwater River
The Stillwater River is a branch of the Penobscot River in central Maine, known for flowing around Marsh Island and through the town of Orono.
-
B.
Rockfish River
Rockfish River is a scenic waterway in central Virginia known for its natural beauty, outdoor recreation, and role as a tributary of the James River.
-
C.
Payette River
The Payette River is a major river in western Idaho known for its rugged canyons, whitewater recreation, and contribution to the Snake River watershed.
-
D.
Rapid River
Rapid River is a watercourse that serves as one of the tributary rivers flowing into Lake of the Woods in North America.
-
E.
Sassafras River
The Sassafras River is a tidal tributary of the Chesapeake Bay in Maryland known for its scenic shorelines, boating, and recreational fishing.
- 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: Stillwater River Target entity description: The Stillwater River is a tributary in central Massachusetts that helps supply water to the Wachusett Reservoir, an important component of the Greater Boston water system.
-
A.
Stillwater River
The Stillwater River is a branch of the Penobscot River in central Maine, known for flowing around Marsh Island and through the town of Orono.
-
B.
Rockfish River
Rockfish River is a scenic waterway in central Virginia known for its natural beauty, outdoor recreation, and role as a tributary of the James River.
-
C.
Payette River
The Payette River is a major river in western Idaho known for its rugged canyons, whitewater recreation, and contribution to the Snake River watershed.
-
D.
Rapid River
Rapid River is a watercourse that serves as one of the tributary rivers flowing into Lake of the Woods in North America.
-
E.
Sassafras River
The Sassafras River is a tidal tributary of the Chesapeake Bay in Maryland known for its scenic shorelines, boating, and recreational fishing.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf | river ⓘ |
| basinCountry | United States of America ⓘ |
| country | United States of America ⓘ |
| flowsThrough | Worcester County, Massachusetts NERFINISHED ⓘ |
| hasEnvironmentalRegulationStatus | protected watershed area ⓘ |
| hasHydrologicalFunction | surface water inflow to Wachusett Reservoir ⓘ |
| hasWatershedLandManagedBy | Massachusetts Department of Conservation and Recreation NERFINISHED ⓘ |
| helpsSupplyWaterTo | Wachusett Reservoir NERFINISHED ⓘ |
| locatedIn |
Massachusetts
ⓘ
Worcester County, Massachusetts NERFINISHED ⓘ central Massachusetts ⓘ town of Princeton, Massachusetts ⓘ town of Sterling, Massachusetts NERFINISHED ⓘ town of West Boylston, Massachusetts ⓘ |
| managedBy | Massachusetts Water Resources Authority NERFINISHED ⓘ |
| mouthLocatedIn | Wachusett Reservoir NERFINISHED ⓘ |
| partOf |
Greater Boston water system
NERFINISHED
ⓘ
Massachusetts public drinking water system ⓘ Metropolitan Boston water supply system NERFINISHED ⓘ Nashua River watershed NERFINISHED ⓘ |
| region | New England NERFINISHED ⓘ |
| tributaryOf | Wachusett Reservoir NERFINISHED ⓘ |
| use | public water supply ⓘ |
| waterQualityProtectedFor | drinking water supply ⓘ |
| waterSourceFor | Greater Boston area 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: Stillwater River Description of subject: The Stillwater River is a tributary in central Massachusetts that helps supply water to the Wachusett Reservoir, an important component of the Greater Boston water system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.