Marin County hills
E438002
The Marin County hills are a series of scenic, rolling coastal hills in Marin County, California, known for their open space preserves, hiking and biking trails, and panoramic views of the San Francisco Bay Area.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Marin County hills canonical | 2 |
| Marin County open space preserves | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4414903 — 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: Marin County hills Context triple: [Marina Bay, Richmond, California, hasViewOf, Marin County hills]
-
A.
San Francisco Hills
San Francisco Hills are the series of prominent, often steep hills that shape San Francisco’s distinctive topography, views, and neighborhood character.
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B.
San Rafael Hills
San Rafael Hills is a small mountain range in Los Angeles County, California, forming part of the Transverse Ranges and overlooking communities such as Pasadena and Glendale.
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C.
Berkeley Hills
Berkeley Hills is a range of rolling, urban-adjacent hills in the San Francisco Bay Area that form the scenic backdrop to the city of Berkeley and the University of California campus.
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D.
Marin Peninsula
The Marin Peninsula is a hilly, coastal region in Northern California just north of San Francisco, known for its scenic landscapes, affluent communities, and proximity to the Golden Gate Bridge and national parklands.
-
E.
San Bruno Mountain
San Bruno Mountain is a prominent ridge in northern San Mateo County, California, known for its biodiversity, endangered butterfly habitats, and panoramic views of the San Francisco Bay Area.
- 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: Marin County hills Target entity description: The Marin County hills are a series of scenic, rolling coastal hills in Marin County, California, known for their open space preserves, hiking and biking trails, and panoramic views of the San Francisco Bay Area.
-
A.
San Francisco Hills
San Francisco Hills are the series of prominent, often steep hills that shape San Francisco’s distinctive topography, views, and neighborhood character.
-
B.
San Rafael Hills
San Rafael Hills is a small mountain range in Los Angeles County, California, forming part of the Transverse Ranges and overlooking communities such as Pasadena and Glendale.
-
C.
Berkeley Hills
Berkeley Hills is a range of rolling, urban-adjacent hills in the San Francisco Bay Area that form the scenic backdrop to the city of Berkeley and the University of California campus.
-
D.
Marin Peninsula
The Marin Peninsula is a hilly, coastal region in Northern California just north of San Francisco, known for its scenic landscapes, affluent communities, and proximity to the Golden Gate Bridge and national parklands.
-
E.
San Bruno Mountain
San Bruno Mountain is a prominent ridge in northern San Mateo County, California, known for its biodiversity, endangered butterfly habitats, and panoramic views of the San Francisco Bay Area.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
hill range ⓘ |
| accessedFrom |
State Route 1 in Marin County
NERFINISHED
ⓘ
U.S. Route 101 in Marin County NERFINISHED ⓘ |
| adjacentTo |
Pacific Ocean
NERFINISHED
ⓘ
San Francisco Bay NERFINISHED ⓘ |
| climate | Mediterranean climate ⓘ |
| contains |
Big Rock Ridge
NERFINISHED
ⓘ
Lucas Valley hills NERFINISHED ⓘ Marin Headlands NERFINISHED ⓘ Mount Tamalpais NERFINISHED ⓘ Ring Mountain NERFINISHED ⓘ Tiburon Peninsula hills NERFINISHED ⓘ |
| containsProtectedArea |
China Camp State Park
NERFINISHED
ⓘ
Golden Gate National Recreation Area units in Marin ⓘ Marin County Open Space District preserves ⓘ Marin Headlands (GGNRA) NERFINISHED ⓘ Mount Tamalpais State Park NERFINISHED ⓘ Ring Mountain Open Space Preserve NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| ecosystemType |
coastal scrub
ⓘ
grassland ⓘ oak woodland ⓘ |
| hasViewOf |
Golden Gate Bridge
NERFINISHED
ⓘ
Mount Tamalpais NERFINISHED ⓘ Pacific Ocean ⓘ San Francisco Bay NERFINISHED ⓘ |
| knownFor |
hiking trails
ⓘ
mountain biking trails ⓘ open space preserves ⓘ panoramic views of the San Francisco Bay Area ⓘ scenic landscapes ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Marin County, California NERFINISHED ⓘ San Francisco Bay Area ⓘ |
| near |
City of San Francisco
NERFINISHED
ⓘ
North Bay communities of Marin County ⓘ |
| partOf | California Coast Ranges NERFINISHED ⓘ |
| popularFor |
day hiking
ⓘ
mountain biking ⓘ nature photography ⓘ road cycling ⓘ trail running ⓘ wildlife viewing ⓘ |
| recreationManagedBy |
California Department of Parks and Recreation
NERFINISHED
ⓘ
Marin County Open Space District NERFINISHED ⓘ U.S. National Park Service NERFINISHED ⓘ |
| terrainType |
coastal hills
ⓘ
rolling hills ⓘ |
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: Marin County hills Description of subject: The Marin County hills are a series of scenic, rolling coastal hills in Marin County, California, known for their open space preserves, hiking and biking trails, and panoramic views of the San Francisco Bay Area.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Marin County open space preserves