San Diego Union Building
E257260
The San Diego Union Building is a historic structure in Old Town San Diego where the city’s first newspaper, the San Diego Union, was originally printed and published.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Diego Union Building canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2356467 — 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 Diego Union Building Context triple: [Old Town San Diego State Historic Park, hasPart, San Diego Union Building]
-
A.
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.
-
B.
Palo Alto City Hall
Palo Alto City Hall is the municipal government building and administrative center serving the city of Palo Alto, California.
-
C.
Los Angeles City Hall
Los Angeles City Hall is the historic and iconic main municipal building of Los Angeles, housing the mayor’s office and the city council chambers.
-
D.
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.
-
E.
Dallas City Hall
Dallas City Hall is the modernist seat of government for the city of Dallas, Texas, designed by architect I. M. Pei and located in the downtown area.
- 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 Diego Union Building Target entity description: The San Diego Union Building is a historic structure in Old Town San Diego where the city’s first newspaper, the San Diego Union, was originally printed and published.
-
A.
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.
-
B.
Palo Alto City Hall
Palo Alto City Hall is the municipal government building and administrative center serving the city of Palo Alto, California.
-
C.
Los Angeles City Hall
Los Angeles City Hall is the historic and iconic main municipal building of Los Angeles, housing the mayor’s office and the city council chambers.
-
D.
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.
-
E.
Dallas City Hall
Dallas City Hall is the modernist seat of government for the city of Dallas, Texas, designed by architect I. M. Pei and located in the downtown area.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
commercial building
ⓘ
historic building ⓘ |
| associatedWith | The San Diego Union ⓘ |
| city | San Diego ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| culturalSignificance | represents early press and communication in San Diego ⓘ |
| era | 19th century ⓘ |
| function |
site where the city’s first newspaper was printed
ⓘ
site where the city’s first newspaper was published ⓘ |
| hasExhibit |
displays about the San Diego Union newspaper
ⓘ
historic printing equipment ⓘ |
| heritageStatus | historic structure ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Old Town, San Diego ⓘ
surface form:
Old Town San Diego
San Diego ⓘ San Diego County ⓘ United States of America ⓘ
surface form:
United States
|
| namedAfter | The San Diego Union ⓘ |
| neighborhood |
Old Town, San Diego
ⓘ
surface form:
Old Town San Diego
|
| openToPublic | yes ⓘ |
| originalUse |
newspaper office
ⓘ
printing office ⓘ publishing house ⓘ |
| partOf | Old Town San Diego State Historic Park ⓘ |
| significance |
associated with the origins of journalism in San Diego
ⓘ
location of the original printing of the San Diego Union newspaper ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| tourism | historic attraction ⓘ |
| usedFor |
printing newspapers
ⓘ
publishing newspapers ⓘ |
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 Diego Union Building Description of subject: The San Diego Union Building is a historic structure in Old Town San Diego where the city’s first newspaper, the San Diego Union, was originally printed and published.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.