Hayward City Hall
E107888
Hayward City Hall is the main municipal government building and administrative center for the city of Hayward, California.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hayward City Hall canonical | 3 |
| Hayward city administrative offices | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T909982 — 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: Hayward City Hall Context triple: [Hayward, hasLandmark, Hayward City Hall]
-
A.
Newton City Hall
Newton City Hall is the main municipal government building and administrative center for the city of Newton, Massachusetts.
-
B.
Centennial Hall
Centennial Hall is a historic early 20th-century multi-purpose hall in Wrocław, Poland, renowned as a pioneering work of reinforced concrete architecture and a UNESCO World Heritage Site.
-
C.
City Hall (Pasadena)
City Hall (Pasadena) is a historic Mediterranean Revival and Spanish Colonial Revival-style civic building in Pasadena, California, renowned for its grand dome and role as a prominent architectural landmark.
-
D.
Santa Barbara City Hall
Santa Barbara City Hall is the main municipal government building of Santa Barbara, California, known for its Spanish Colonial Revival architecture and role as the center of local civic administration.
-
E.
Marin County Civic Center
The Marin County Civic Center is a landmark government complex in San Rafael, California, renowned for its futuristic design by architect Frank Lloyd Wright.
- 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: Hayward City Hall Target entity description: Hayward City Hall is the main municipal government building and administrative center for the city of Hayward, California.
-
A.
Newton City Hall
Newton City Hall is the main municipal government building and administrative center for the city of Newton, Massachusetts.
-
B.
Centennial Hall
Centennial Hall is a historic early 20th-century multi-purpose hall in Wrocław, Poland, renowned as a pioneering work of reinforced concrete architecture and a UNESCO World Heritage Site.
-
C.
City Hall (Pasadena)
City Hall (Pasadena) is a historic Mediterranean Revival and Spanish Colonial Revival-style civic building in Pasadena, California, renowned for its grand dome and role as a prominent architectural landmark.
-
D.
Santa Barbara City Hall
Santa Barbara City Hall is the main municipal government building of Santa Barbara, California, known for its Spanish Colonial Revival architecture and role as the center of local civic administration.
-
E.
Marin County Civic Center
The Marin County Civic Center is a landmark government complex in San Rafael, California, renowned for its futuristic design by architect Frank Lloyd Wright.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
city hall
ⓘ
government building ⓘ municipal building ⓘ |
| category |
Buildings and structures in Hayward, California
ⓘ
City and town halls in California ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| function |
administrative center for the city of Hayward
ⓘ
seat of municipal government of Hayward, California ⓘ |
| governmentLevel | local government ⓘ |
| governs |
City of Hayward
ⓘ
linked to:
Hayward
|
| hasPart |
administrative offices
ⓘ
city council chambers ⓘ mayor’s office ⓘ public service counters ⓘ |
| locatedIn |
Alameda County, California
ⓘ
linked to:
Alameda County
California ⓘ
linked to:
California, United States
Hayward, California ⓘ
linked to:
Hayward
United States ⓘ
linked to:
United States of America
|
| occupant |
Hayward City Council
ⓘ
Hayward city administrative offices ⓘ
linked to:
Hayward City Hall
Hayward city government ⓘ
linked to:
Hayward
Office of the Mayor of Hayward ⓘ |
| operator |
City of Hayward
ⓘ
linked to:
Hayward
|
| ownedBy |
City of Hayward
ⓘ
linked to:
Hayward
|
| serves | residents of Hayward, California ⓘ |
| usedFor |
city council meetings
ⓘ
municipal administration ⓘ public services for residents of Hayward ⓘ |
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: Hayward City Hall Description of subject: Hayward City Hall is the main municipal government building and administrative center for the city of Hayward, California.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hayward City Hall