Mount Tamalpais Watershed
E695488
Mount Tamalpais Watershed is a protected natural area on the slopes of Mount Tamalpais in Marin County, California, that safeguards local water supplies while offering extensive open space and recreational opportunities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mount Tamalpais Watershed canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7797772 — 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: Mount Tamalpais Watershed Context triple: [Fairfax, California, hasNearbyProtectedArea, Mount Tamalpais Watershed]
-
A.
Mount Tamalpais State Park
Mount Tamalpais State Park is a popular California state park on Mount Tamalpais in Marin County, known for its panoramic Bay Area views, extensive hiking and biking trails, and redwood and chaparral landscapes.
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B.
Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
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C.
Hackensack River watershed
The Hackensack River watershed is the drainage area in northeastern New Jersey and southeastern New York that collects water flowing into the Hackensack River before it empties into Newark Bay.
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D.
Ramapo Mountain State Forest
Ramapo Mountain State Forest is a New Jersey state-managed woodland and recreation area known for its rugged terrain, hiking trails, and scenic views within the Ramapo Mountains.
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E.
Mill Valley
Mill Valley is a small, affluent city in the San Francisco Bay Area known for its redwood forests, arts scene, and proximity to Mount Tamalpais.
- 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: Mount Tamalpais Watershed Target entity description: Mount Tamalpais Watershed is a protected natural area on the slopes of Mount Tamalpais in Marin County, California, that safeguards local water supplies while offering extensive open space and recreational opportunities.
-
A.
Mount Tamalpais State Park
Mount Tamalpais State Park is a popular California state park on Mount Tamalpais in Marin County, known for its panoramic Bay Area views, extensive hiking and biking trails, and redwood and chaparral landscapes.
-
B.
Catskill-Delaware Watershed
The Catskill-Delaware Watershed is a major protected watershed system in southeastern New York that supplies most of New York City’s unfiltered drinking water.
-
C.
Hackensack River watershed
The Hackensack River watershed is the drainage area in northeastern New Jersey and southeastern New York that collects water flowing into the Hackensack River before it empties into Newark Bay.
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D.
Ramapo Mountain State Forest
Ramapo Mountain State Forest is a New Jersey state-managed woodland and recreation area known for its rugged terrain, hiking trails, and scenic views within the Ramapo Mountains.
-
E.
Mill Valley
Mill Valley is a small, affluent city in the San Francisco Bay Area known for its redwood forests, arts scene, and proximity to Mount Tamalpais.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
open space preserve
ⓘ
protected area ⓘ watershed ⓘ |
| adjacentTo |
Golden Gate National Recreation Area
NERFINISHED
ⓘ
Mount Tamalpais State Park NERFINISHED ⓘ |
| contains |
Alpine Lake
NERFINISHED
ⓘ
Bon Tempe Lake NERFINISHED ⓘ Kent Lake NERFINISHED ⓘ Lagunitas Lake NERFINISHED ⓘ Lake Lagunitas NERFINISHED ⓘ Nicasio Reservoir NERFINISHED ⓘ Phoenix Lake NERFINISHED ⓘ |
| country | United States of America ⓘ |
| governedBy | Marin Municipal Water District watershed regulations ⓘ |
| hasAccessPoint |
Natalie Coffin Greene Park entrance
NERFINISHED
ⓘ
Sky Oaks Road entrance ⓘ |
| hasConservationGoal |
preservation of native biodiversity
ⓘ
protection of drinking water quality ⓘ |
| hasEcosystemType |
chaparral
ⓘ
coastal forest ⓘ grassland ⓘ |
| hasFeature |
fire roads network
ⓘ
oak woodlands ⓘ redwood groves ⓘ reservoir system ⓘ scenic vistas of Mount Tamalpais ⓘ |
| hasRegulation |
dogs restricted in some areas
ⓘ
no swimming in reservoirs ⓘ restricted vehicle access ⓘ |
| hasTrailUsePolicy |
designated hiking-only trails
ⓘ
multi-use fire roads ⓘ |
| hasUse |
bicycling
ⓘ
hiking ⓘ horseback riding ⓘ nature observation ⓘ recreation ⓘ |
| locatedIn | Marin County, California NERFINISHED ⓘ |
| locatedOn | slopes of Mount Tamalpais ⓘ |
| managedBy | Marin Municipal Water District NERFINISHED ⓘ |
| near |
Fairfax, California
NERFINISHED
ⓘ
Mill Valley, California NERFINISHED ⓘ San Rafael, California NERFINISHED ⓘ |
| openToPublic | yes ⓘ |
| partOf | Mount Tamalpais region NERFINISHED ⓘ |
| primaryFunction | water supply protection ⓘ |
| protects | local water supplies ⓘ |
| secondaryFunction |
open space conservation
ⓘ
wildlife habitat protection ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
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: Mount Tamalpais Watershed Description of subject: Mount Tamalpais Watershed is a protected natural area on the slopes of Mount Tamalpais in Marin County, California, that safeguards local water supplies while offering extensive open space and recreational opportunities.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Fairfax, California