Red Rock Island
E445291
Red Rock Island is a small, privately owned rocky island in San Francisco Bay, notable as the only privately held island in the bay and a visible landmark between Richmond and San Rafael.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Red Rock Island canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T1562385 — 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: Red Rock Island Context triple: [Richmond–San Rafael Bridge, passesNear, Red Rock Island]
-
A.
Rocky Island
Rocky Island is one of the Apostle Islands in Lake Superior, known for its forested landscape and relatively undeveloped, natural shoreline.
-
B.
Gunnison Island
Gunnison Island is a remote, largely uninhabited island and important bird sanctuary located in Utah’s Great Salt Lake.
-
C.
Nonamesset Island
Nonamesset Island is a small, privately owned island at the eastern end of Massachusetts’ Elizabeth Islands, near Woods Hole and the entrance to Vineyard Sound.
-
D.
Strait Island
Strait Island is a small island in the Andaman archipelago of India that serves as a key settlement area for the indigenous Great Andamanese people.
-
E.
Eagle Island
Eagle Island is one of the Apostle Islands in Lake Superior, known for its scenic shoreline and natural, largely undeveloped landscape within the Apostle Islands region of northern Wisconsin.
- 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: Red Rock Island Target entity description: Red Rock Island is a small, privately owned rocky island in San Francisco Bay, notable as the only privately held island in the bay and a visible landmark between Richmond and San Rafael.
-
A.
Rocky Island
Rocky Island is one of the Apostle Islands in Lake Superior, known for its forested landscape and relatively undeveloped, natural shoreline.
-
B.
Gunnison Island
Gunnison Island is a remote, largely uninhabited island and important bird sanctuary located in Utah’s Great Salt Lake.
-
C.
Nonamesset Island
Nonamesset Island is a small, privately owned island at the eastern end of Massachusetts’ Elizabeth Islands, near Woods Hole and the entrance to Vineyard Sound.
-
D.
Strait Island
Strait Island is a small island in the Andaman archipelago of India that serves as a key settlement area for the indigenous Great Andamanese people.
-
E.
Eagle Island
Eagle Island is one of the Apostle Islands in Lake Superior, known for its scenic shoreline and natural, largely undeveloped landscape within the Apostle Islands region of northern Wisconsin.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
geographical feature
ⓘ
island ⓘ privately owned island ⓘ |
| accessibleBy | boat ⓘ |
| alsoKnownAs |
Golden Rock
ⓘ
Molate Island ⓘ Treasure Rock ⓘ |
| area | approximately 5.8 acres ⓘ |
| bay | San Francisco Bay ⓘ |
| coastline | rocky shoreline ⓘ |
| color | reddish ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county | Contra Costa County ⓘ |
| elevation | approximately 151 feet ⓘ |
| geology | rocky island ⓘ |
| locatedBetween |
Richmond, California
ⓘ
San Rafael, California ⓘ
linked to:
San Rafael
|
| locatedIn | San Francisco Bay ⓘ |
| nameOrigin | named for its red-colored rock ⓘ |
| near | Richmond–San Rafael Bridge ⓘ |
| notableFor |
being a visible landmark between Richmond and San Rafael
ⓘ
being the only privately held island in San Francisco Bay ⓘ |
| ownership | private ⓘ |
| partOf |
Pacific Coast of the United States
ⓘ
linked to:
West Coast of the United States
|
| region | San Francisco Bay Area ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| surroundedBy | San Francisco Bay waters ⓘ |
| uninhabited | true ⓘ |
| visibility |
visible from Richmond
ⓘ
visible from San Rafael ⓘ |
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: Red Rock Island Description of subject: Red Rock Island is a small, privately owned rocky island in San Francisco Bay, notable as the only privately held island in the bay and a visible landmark between Richmond and San Rafael.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.