Fountainhead Regional Park (on Occoquan Reservoir)
E580597
Fountainhead Regional Park (on Occoquan Reservoir) is a Northern Virginia outdoor recreation area known for its boating, fishing, hiking, and mountain biking opportunities along the Occoquan River.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fountainhead Regional Park (on Occoquan Reservoir) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6257918 — 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: Fountainhead Regional Park (on Occoquan Reservoir) Context triple: [Occoquan River, hasRecreationArea, Fountainhead Regional Park (on Occoquan Reservoir)]
-
A.
Lake Accotink Park
Lake Accotink Park is a popular Fairfax County, Virginia recreational area centered around Lake Accotink, offering trails, boating, picnicking, and other outdoor activities.
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B.
Pohick Bay Regional Park
Pohick Bay Regional Park is a waterfront recreational area in Northern Virginia offering camping, boating, hiking, and other outdoor activities along the Potomac River.
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C.
Cabin John Regional Park
Cabin John Regional Park is a large Montgomery County, Maryland park known for its wooded trails, picnic areas, playgrounds, and recreational facilities including the Cabin John Ice Rink and miniature train.
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D.
Lake Fairfax Park
Lake Fairfax Park is a large public park in Reston, Virginia, known for its lake, trails, campgrounds, and recreational facilities.
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E.
East Park Reservoir area
The East Park Reservoir area is a section of Philadelphia’s Fairmount Park that encompasses a historic water reservoir and surrounding green space used for recreation and conservation.
- 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: Fountainhead Regional Park (on Occoquan Reservoir) Target entity description: Fountainhead Regional Park (on Occoquan Reservoir) is a Northern Virginia outdoor recreation area known for its boating, fishing, hiking, and mountain biking opportunities along the Occoquan River.
-
A.
Lake Accotink Park
Lake Accotink Park is a popular Fairfax County, Virginia recreational area centered around Lake Accotink, offering trails, boating, picnicking, and other outdoor activities.
-
B.
Pohick Bay Regional Park
Pohick Bay Regional Park is a waterfront recreational area in Northern Virginia offering camping, boating, hiking, and other outdoor activities along the Potomac River.
-
C.
Cabin John Regional Park
Cabin John Regional Park is a large Montgomery County, Maryland park known for its wooded trails, picnic areas, playgrounds, and recreational facilities including the Cabin John Ice Rink and miniature train.
-
D.
Lake Fairfax Park
Lake Fairfax Park is a large public park in Reston, Virginia, known for its lake, trails, campgrounds, and recreational facilities.
-
E.
East Park Reservoir area
The East Park Reservoir area is a section of Philadelphia’s Fairmount Park that encompasses a historic water reservoir and surrounding green space used for recreation and conservation.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf | regional park ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| hasActivity |
boating
ⓘ
canoeing ⓘ fishing ⓘ hiking ⓘ kayaking ⓘ mountain biking ⓘ trail running ⓘ |
| hasFacility |
boat launch
ⓘ
fishing pier ⓘ marina ⓘ parking lot ⓘ picnic area ⓘ restrooms ⓘ |
| hasNaturalFeature |
forests
ⓘ
rolling hills ⓘ waterfront shoreline ⓘ |
| hasTrailType |
hiking trail
ⓘ
mountain bike trail ⓘ |
| locatedIn |
Fairfax County, Virginia
ⓘ
Northern Virginia ⓘ |
| locatedOnWaterbody |
Occoquan Reservoir
ⓘ
Occoquan River ⓘ |
| managedBy | Northern Virginia Regional Park Authority ⓘ |
| openTo | public ⓘ |
| ownedBy | Northern Virginia Regional Park Authority ⓘ |
| partOf |
Occoquan Reservoir recreation area
ⓘ
linked to:
Occoquan Reservoir
|
| region |
Mid-Atlantic United States
ⓘ
linked to:
Mid-Atlantic states
|
| state | Virginia ⓘ |
| usedFor |
nature observation
ⓘ
outdoor recreation ⓘ wildlife viewing ⓘ |
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: Fountainhead Regional Park (on Occoquan Reservoir) Description of subject: Fountainhead Regional Park (on Occoquan Reservoir) is a Northern Virginia outdoor recreation area known for its boating, fishing, hiking, and mountain biking opportunities along the Occoquan River.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.