SF
E1413
SF is the standard two-letter postal abbreviation used to represent the city of San Francisco, California.
All labels observed (1)
| Label | Occurrences |
|---|---|
| SF canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T11876 — 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: SF Context triple: [San Francisco, postalAbbreviation, SF]
-
A.
Sununu
Sununu is a prominent American political family name most notably associated with former New Hampshire Governor and White House Chief of Staff John H. Sununu and his son, Governor Chris Sununu.
-
B.
Blitz
The Blitz was the sustained German bombing campaign against the United Kingdom, particularly London, during 1940–1941 in World War II.
-
C.
HUP
HUP is a major academic medical center in Philadelphia that serves as the flagship teaching hospital of the University of Pennsylvania's health system.
-
D.
Lee
Lee is a given name shared by numerous individuals across different cultures and professions.
-
E.
AFC
The AFC (American Football Conference) is one of the two conferences that make up the National Football League, comprising 16 teams that compete for a spot in the Super Bowl.
- 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: SF Target entity description: SF is the standard two-letter postal abbreviation used to represent the city of San Francisco, California.
-
A.
Sununu
Sununu is a prominent American political family name most notably associated with former New Hampshire Governor and White House Chief of Staff John H. Sununu and his son, Governor Chris Sununu.
-
B.
Blitz
The Blitz was the sustained German bombing campaign against the United Kingdom, particularly London, during 1940–1941 in World War II.
-
C.
HUP
HUP is a major academic medical center in Philadelphia that serves as the flagship teaching hospital of the University of Pennsylvania's health system.
-
D.
Lee
Lee is a given name shared by numerous individuals across different cultures and professions.
-
E.
AFC
The AFC (American Football Conference) is one of the two conferences that make up the National Football League, comprising 16 teams that compete for a spot in the Super Bowl.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
postal abbreviation
ⓘ
two-letter abbreviation ⓘ |
| abbreviationFor | San Francisco ⓘ |
| associatedWith |
Bay Area
ⓘ
linked to:
San Francisco Bay Area
Northern California ⓘ |
| cityType | consolidated city-county ⓘ |
| context |
US postal system
ⓘ
linked to:
United States Postal Service
geographic addressing ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| firstLetter | S ⓘ |
| language | English ⓘ |
| letterCount | 2 ⓘ |
| notToBeConfusedWith | CA (California state postal abbreviation) ⓘ |
| refersTo |
San Francisco
ⓘ
San Francisco, California ⓘ
linked to:
San Francisco
|
| regionCodeType | city code ⓘ |
| secondLetter | F ⓘ |
| shortFormOf | San Francisco ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| usedBy |
businesses in San Francisco
ⓘ
residents of San Francisco ⓘ tourism industry referring to San Francisco ⓘ |
| usedFor |
informal shorthand for San Francisco
ⓘ
mailing addresses ⓘ |
| usedIn |
United States Postal Service addressing
ⓘ
linked to:
United States Postal Service
|
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: SF Description of subject: SF is the standard two-letter postal abbreviation used to represent the city of San Francisco, California.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
San Francisco (via Wikimedia Foundation)
subject linked to:
San Francisco, California, United States of America