Fells Reservoir
E168642
Fells Reservoir is a man-made water body in Massachusetts that serves as part of the regional water supply and recreational landscape within the Middlesex Fells Reservation.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Fells Reservoir canonical | 2 |
| Cheshire Reservoir | 1 |
| North Reservoir | 1 |
| South Reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1424949 — 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: Fells Reservoir Context triple: [Mystic River watershed, contains, Fells Reservoir]
-
A.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
B.
Foziling Reservoir
Foziling Reservoir is a major multipurpose water conservancy project in Anhui Province, China, known for flood control, irrigation, and water supply within the Huai River basin.
-
C.
Boyds Corner Reservoir
Boyds Corner Reservoir is a small New York City water supply reservoir in Putnam County, New York, that forms part of the city’s Croton watershed system.
-
D.
Dovestones Reservoir
Dovestones Reservoir is a scenic man-made lake in the Peak District near Oldham, England, popular for walking, wildlife, and outdoor recreation.
-
E.
Derwent Reservoir
Derwent Reservoir is a large man-made lake in Derbyshire, England, best known for its scenic surroundings in the Peak District and its historical association with the World War II "Dambusters" training flights.
- 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: Fells Reservoir Target entity description: Fells Reservoir is a man-made water body in Massachusetts that serves as part of the regional water supply and recreational landscape within the Middlesex Fells Reservation.
-
A.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
B.
Foziling Reservoir
Foziling Reservoir is a major multipurpose water conservancy project in Anhui Province, China, known for flood control, irrigation, and water supply within the Huai River basin.
-
C.
Boyds Corner Reservoir
Boyds Corner Reservoir is a small New York City water supply reservoir in Putnam County, New York, that forms part of the city’s Croton watershed system.
-
D.
Dovestones Reservoir
Dovestones Reservoir is a scenic man-made lake in the Peak District near Oldham, England, popular for walking, wildlife, and outdoor recreation.
-
E.
Derwent Reservoir
Derwent Reservoir is a large man-made lake in Derbyshire, England, best known for its scenic surroundings in the Peak District and its historical association with the World War II "Dambusters" training flights.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| hasAccess | public trails ⓘ |
| hasEcosystemType | temperate forest–reservoir interface ⓘ |
| hasFunction |
drinking water storage
ⓘ
flood control support ⓘ recreational amenity ⓘ |
| hasNearbyFeature | Middlesex Fells Reservation trail network ⓘ |
| hasRecreationActivity |
hiking along shoreline trails
ⓘ
scenic viewing ⓘ wildlife viewing ⓘ |
| locatedIn |
Massachusetts
ⓘ
Middlesex County, Massachusetts ⓘ |
| locatedInProtectedArea | Middlesex Fells Reservation ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedNear |
Medford, Massachusetts
NERFINISHED
ⓘ
Stoneham, Massachusetts ⓘ Winchester, Massachusetts NERFINISHED ⓘ |
| managedBy | Massachusetts Department of Conservation and Recreation ⓘ |
| partOf |
Middlesex Fells Reservation water system
ⓘ
regional water supply system for Greater Boston area ⓘ |
| prohibitsActivity |
motorized boating (for water supply protection)
ⓘ
swimming (for water supply protection) ⓘ |
| surroundedBy | forested conservation land ⓘ |
| use |
public water supply
ⓘ
recreation ⓘ wildlife habitat ⓘ |
| waterBodyType | freshwater reservoir ⓘ |
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: Fells Reservoir Description of subject: Fells Reservoir is a man-made water body in Massachusetts that serves as part of the regional water supply and recreational landscape within the Middlesex Fells Reservation.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
South Reservoir
this entity surface form:
North Reservoir
this entity surface form:
Cheshire Reservoir