San Leandro Marina
E762341
San Leandro Marina is a waterfront recreational harbor and park area on the eastern shore of San Francisco Bay in San Leandro, California.
All labels observed (2)
| Label | Occurrences |
|---|---|
| San Leandro Marina canonical | 2 |
| San Leandro shoreline | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8864407 — 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: San Leandro Marina Context triple: [San Leandro, hasHarbor, San Leandro Marina]
-
A.
Alameda Marina
Alameda Marina is a waterfront harbor and boating facility in Alameda, California, offering slips, marine services, and bay access for recreational and commercial vessels.
-
B.
Berkeley Marina
Berkeley Marina is a waterfront recreational area on the San Francisco Bay known for its marina facilities, parks, trails, and panoramic views.
-
C.
Coyote Point Marina
Coyote Point Marina is a public marina and recreational harbor on the San Francisco Bay in San Mateo, California, offering boat slips, waterfront access, and nearby park amenities.
-
D.
Oyster Point Marina
Oyster Point Marina is a waterfront harbor and recreational area in South San Francisco featuring boat slips, a park, and bayfront trails.
-
E.
Petaluma Marina
Petaluma Marina is a public marina and recreational boating facility located along the Petaluma River in Petaluma, California.
- 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: San Leandro Marina Target entity description: San Leandro Marina is a waterfront recreational harbor and park area on the eastern shore of San Francisco Bay in San Leandro, California.
-
A.
Alameda Marina
Alameda Marina is a waterfront harbor and boating facility in Alameda, California, offering slips, marine services, and bay access for recreational and commercial vessels.
-
B.
Berkeley Marina
Berkeley Marina is a waterfront recreational area on the San Francisco Bay known for its marina facilities, parks, trails, and panoramic views.
-
C.
Coyote Point Marina
Coyote Point Marina is a public marina and recreational harbor on the San Francisco Bay in San Mateo, California, offering boat slips, waterfront access, and nearby park amenities.
-
D.
Oyster Point Marina
Oyster Point Marina is a waterfront harbor and recreational area in South San Francisco featuring boat slips, a park, and bayfront trails.
-
E.
Petaluma Marina
Petaluma Marina is a public marina and recreational boating facility located along the Petaluma River in Petaluma, California.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
marina
ⓘ
recreational harbor ⓘ waterfront park ⓘ |
| adjacentTo |
San Francisco Bay
ⓘ
San Leandro shoreline trails ⓘ |
| category |
Marinas in California
ⓘ
Parks in Alameda County, California ⓘ San Leandro, California ⓘ
linked to:
San Leandro
|
| country |
United States
ⓘ
linked to:
United States of America
|
| hasAccessibility | public ⓘ |
| hasEnvironment |
coastal
ⓘ
tidal shoreline ⓘ |
| hasFeature |
boat harbor
ⓘ
boat launch facilities ⓘ fishing access ⓘ open lawns ⓘ parking lots ⓘ picnic areas ⓘ playground areas ⓘ public restrooms ⓘ shoreline paths ⓘ views of San Francisco Bay ⓘ walking trails ⓘ waterfront parkland ⓘ |
| hasNearbyLandUse |
residential neighborhoods
ⓘ
urban ⓘ |
| hasRecreationType | day-use recreation ⓘ |
| hasTransportationAccess | road access from San Leandro ⓘ |
| hasUse |
birdwatching
ⓘ
jogging ⓘ picnicking ⓘ recreational boating ⓘ shoreline fishing ⓘ walking ⓘ waterfront recreation ⓘ |
| hasViewOf |
Bay shoreline
ⓘ
San Francisco Bay ⓘ |
| locatedIn |
Alameda County, California
ⓘ
linked to:
Alameda County
San Francisco Bay Area ⓘ San Leandro, California ⓘ
linked to:
San Leandro
|
| locatedOn | eastern shore of San Francisco Bay ⓘ |
| near |
City of Oakland, California
ⓘ
linked to:
Oakland, California, United States
Oakland International Airport ⓘ |
| operatedBy |
City of San Leandro
ⓘ
linked to:
San Leandro
|
| ownedBy |
City of San Leandro
ⓘ
linked to:
San Leandro
|
| partOf |
San Leandro shoreline
ⓘ
linked to:
San Leandro Marina
|
| region | East Bay ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
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: San Leandro Marina Description of subject: San Leandro Marina is a waterfront recreational harbor and park area on the eastern shore of San Francisco Bay in San Leandro, California.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: San Leandro Marina