Port Costa Warehouse ruins
E489331
The Port Costa Warehouse ruins are the remains of a historic waterfront grain warehouse complex in Port Costa, California, that once served as a key shipping and storage hub along the Carquinez Strait.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Port Costa Warehouse ruins canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5048128 — 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: Port Costa Warehouse ruins Context triple: [Port Costa, California, notableBuilding, Port Costa Warehouse ruins]
-
A.
Lake Innes Ruins
Lake Innes Ruins are the remains of a 19th-century colonial estate near Port Macquarie, New South Wales, notable for their historical significance and picturesque, overgrown setting.
-
B.
Dungeness Ruins
Dungeness Ruins are the remains of a once-grand Carnegie family mansion on Georgia’s Cumberland Island, now a prominent historic and scenic landmark within the national seashore.
-
C.
Catherineberg Sugar Mill Ruins
Catherineberg Sugar Mill Ruins is a historic former sugar plantation and mill complex on Saint John in the U.S. Virgin Islands, notable for its preserved windmill tower and role in the island’s colonial-era sugar industry.
-
D.
Cliff House site
The Cliff House site is a historic coastal landmark area in San Francisco overlooking the Pacific Ocean, long known for its seaside resort, scenic views, and proximity to Ocean Beach.
-
E.
Mooloolaba Wharf precinct
Mooloolaba Wharf precinct is a waterfront dining, shopping, and entertainment area on Queensland’s Sunshine Coast, known for its marina, eateries, and tourist activities.
- 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: Port Costa Warehouse ruins Target entity description: The Port Costa Warehouse ruins are the remains of a historic waterfront grain warehouse complex in Port Costa, California, that once served as a key shipping and storage hub along the Carquinez Strait.
-
A.
Lake Innes Ruins
Lake Innes Ruins are the remains of a 19th-century colonial estate near Port Macquarie, New South Wales, notable for their historical significance and picturesque, overgrown setting.
-
B.
Dungeness Ruins
Dungeness Ruins are the remains of a once-grand Carnegie family mansion on Georgia’s Cumberland Island, now a prominent historic and scenic landmark within the national seashore.
-
C.
Catherineberg Sugar Mill Ruins
Catherineberg Sugar Mill Ruins is a historic former sugar plantation and mill complex on Saint John in the U.S. Virgin Islands, notable for its preserved windmill tower and role in the island’s colonial-era sugar industry.
-
D.
Cliff House site
The Cliff House site is a historic coastal landmark area in San Francisco overlooking the Pacific Ocean, long known for its seaside resort, scenic views, and proximity to Ocean Beach.
-
E.
Mooloolaba Wharf precinct
Mooloolaba Wharf precinct is a waterfront dining, shopping, and entertainment area on Queensland’s Sunshine Coast, known for its marina, eateries, and tourist activities.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
historic site
ⓘ
industrial archaeological site ⓘ warehouse ruins ⓘ |
| architecturalStyle | industrial vernacular ⓘ |
| category |
grain elevators and warehouses in the United States
ⓘ
industrial ruins in California ⓘ waterfront structures in California ⓘ |
| climateRegion | Mediterranean climate region of California ⓘ |
| constructionMaterial |
brick
ⓘ
concrete ⓘ timber ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currentCondition | ruins ⓘ |
| currentUse | scenic waterfront ruins ⓘ |
| eraOfSignificance |
early 20th century
ⓘ
late 19th century ⓘ |
| hasPart |
brick and timber fragments
ⓘ
concrete foundations ⓘ remains of grain warehouses ⓘ waterfront wharf remnants ⓘ |
| heritageValue |
local industrial history
ⓘ
maritime commerce history ⓘ |
| historicalUse |
export of Central Valley grain
ⓘ
storage of bulk agricultural commodities ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Contra Costa County, California ⓘ
linked to:
Contra Costa County
Port Costa, California ⓘ United States ⓘ
linked to:
United States of America
|
| locatedInRegion | San Francisco Bay Area ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| locatedNear |
BNSF Railway line
ⓘ
Carquinez Bridge vicinity ⓘ Port Costa town center ⓘ
linked to:
Port Costa historic commercial core
Union Pacific Railroad tracks ⓘ |
| locatedOnWaterbody |
Carquinez Strait
ⓘ
linked to:
Carquinez Pass
|
| nearbyAttraction | downtown Port Costa historic district ⓘ |
| originalFunction |
freight transfer point
ⓘ
grain shipping terminal ⓘ grain storage ⓘ |
| partOf | historic waterfront of Port Costa ⓘ |
| tourism |
attracts local visitors
ⓘ
attracts photographers ⓘ |
| transportConnection |
maritime shipping
ⓘ
rail transport ⓘ |
| visibleFrom |
Carquinez Strait shipping channel
ⓘ
linked to:
Carquinez Strait region
passing freight trains ⓘ |
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: Port Costa Warehouse ruins Description of subject: The Port Costa Warehouse ruins are the remains of a historic waterfront grain warehouse complex in Port Costa, California, that once served as a key shipping and storage hub along the Carquinez Strait.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.