Oakland City Hall
E231564
Oakland City Hall is a historic Beaux-Arts government building in Oakland, California, notable for its distinctive tower and role as the seat of the city's municipal government.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Oakland City Hall canonical | 12 |
| 1 Frank H. Ogawa Plaza, Oakland, California | 1 |
| Oakland City Hall annex projects | 1 |
| Oakland City Hall clock tower | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2071891 — 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: Oakland City Hall Context triple: [Downtown Oakland, hasLandmark, Oakland City Hall]
-
A.
Sacramento City Hall
Sacramento City Hall is the main municipal government building of Sacramento, California, housing the mayor’s office, city administration, and the chambers of the Sacramento City Council.
-
B.
San Francisco City Hall
San Francisco City Hall is a historic Beaux-Arts landmark in the city’s Civic Center, serving as the seat of government and a prominent architectural symbol of San Francisco.
-
C.
Portland City Hall
Portland City Hall is the historic municipal building in downtown Portland, Oregon, that houses the offices and chambers of the city’s government.
-
D.
Palo Alto City Hall
Palo Alto City Hall is the municipal government building and administrative center serving the city of Palo Alto, California.
-
E.
Pioneer Courthouse
Pioneer Courthouse is a historic 19th-century federal courthouse in downtown Portland, Oregon, and one of the oldest functioning federal courthouses in the western United States.
- 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: Oakland City Hall Target entity description: Oakland City Hall is a historic Beaux-Arts government building in Oakland, California, notable for its distinctive tower and role as the seat of the city's municipal government.
-
A.
Sacramento City Hall
Sacramento City Hall is the main municipal government building of Sacramento, California, housing the mayor’s office, city administration, and the chambers of the Sacramento City Council.
-
B.
San Francisco City Hall
San Francisco City Hall is a historic Beaux-Arts landmark in the city’s Civic Center, serving as the seat of government and a prominent architectural symbol of San Francisco.
-
C.
Portland City Hall
Portland City Hall is the historic municipal building in downtown Portland, Oregon, that houses the offices and chambers of the city’s government.
-
D.
Palo Alto City Hall
Palo Alto City Hall is the municipal government building and administrative center serving the city of Palo Alto, California.
-
E.
Pioneer Courthouse
Pioneer Courthouse is a historic 19th-century federal courthouse in downtown Portland, Oregon, and one of the oldest functioning federal courthouses in the western United States.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Beaux-Arts architecture
ⓘ
city hall ⓘ government building ⓘ historic building ⓘ |
| address |
Oakland City Hall
self-linksurface differs
ⓘ
surface form:
1 Frank H. Ogawa Plaza, Oakland, California
|
| architect |
John Galen Howard
ⓘ
surface form:
John Galen Howard (consulting influence)
Henry Hornbostel ⓘ
surface form:
Palmer & Hornbostel
|
| architecturalStyle |
Beaux-Arts
ⓘ
Neoclassical architecture ⓘ
surface form:
Classical Revival
|
| category |
Buildings and structures in Oakland, California
ⓘ
Skyscraper city and town halls in the United States ⓘ |
| constructionEnd | 1914 ⓘ |
| constructionStart | 1910 ⓘ |
| coordinates | 37.805°N 122.272°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| function | seat of municipal government of Oakland ⓘ |
| hasPart |
central tower
ⓘ
clock tower ⓘ council chambers ⓘ dome ⓘ mayor’s office ⓘ |
| height |
approximately 324 feet
ⓘ
approximately 99 meters ⓘ |
| heritageDesignation |
Oakland Designated Landmark
ⓘ
surface form:
Oakland Landmark
listed on the National Register of Historic Places ⓘ |
| houses |
Oakland City Council
ⓘ
Government of the City of Oakland ⓘ
surface form:
Office of the Mayor of Oakland
|
| inception | 1914 ⓘ |
| locatedIn |
Alameda County
ⓘ
surface form:
Alameda County, California
California, United States ⓘ
surface form:
California
Oakland ⓘ
surface form:
Oakland, California
United States of America ⓘ
surface form:
United States
|
| material |
brick
ⓘ
granite ⓘ steel frame ⓘ terra cotta ⓘ |
| notableFeature |
Beaux-Arts façade with classical detailing
ⓘ
distinctive three-tiered tower ⓘ ornamental clock faces ⓘ |
| NRHPListingDate | 1978 ⓘ |
| NRHPReferenceNumber | 78000650 ⓘ |
| numberOfFloors | about 18 ⓘ |
| owner |
Oakland
ⓘ
surface form:
City of Oakland
|
| significantEvent |
damaged in the 1989 Loma Prieta earthquake
ⓘ
seismic retrofit completed in the 1990s ⓘ |
| surroundedBy | Frank H. Ogawa Plaza ⓘ |
| usedFor |
city administration
ⓘ
civic ceremonies ⓘ public meetings ⓘ |
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: Oakland City Hall Description of subject: Oakland City Hall is a historic Beaux-Arts government building in Oakland, California, notable for its distinctive tower and role as the seat of the city's municipal government.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Oakland City Hall annex projects
this entity surface form:
Oakland City Hall clock tower
this entity surface form:
1 Frank H. Ogawa Plaza, Oakland, California
subject surface form:
Broadway (Oakland, California)