San Francisco mayoral election, 2018
E44123
The San Francisco mayoral election of 2018 was a special election in which voters chose a new mayor following the death of Mayor Ed Lee, ultimately resulting in London Breed becoming the city’s first Black woman mayor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| San Francisco mayoral election, 2018 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T347767 — 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 Francisco mayoral election, 2018 Context triple: [Mayor of San Francisco, electedIn, San Francisco mayoral election, 2018]
-
A.
San Francisco Board of Supervisors
The San Francisco Board of Supervisors is the city and county’s elected legislative body, responsible for passing local laws, approving budgets, and overseeing municipal agencies.
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B.
Mayor of San Francisco
The Mayor of San Francisco is the elected chief executive of the City and County of San Francisco, responsible for overseeing city government, implementing local policies, and representing the city at the regional, state, and national levels.
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C.
Gavin Newsom
Gavin Newsom is an American politician and member of the Democratic Party who serves as the governor of California and is known for his progressive policies on issues such as climate change, healthcare, and social justice.
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D.
Government of San Francisco
The Government of San Francisco is the consolidated city-county administration that manages local legislative, executive, and municipal services for San Francisco, California.
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E.
Sacramento City Council
The Sacramento City Council is the elected governing body responsible for setting policy, passing local laws, and overseeing the municipal government of Sacramento, California.
- 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 Francisco mayoral election, 2018 Target entity description: The San Francisco mayoral election of 2018 was a special election in which voters chose a new mayor following the death of Mayor Ed Lee, ultimately resulting in London Breed becoming the city’s first Black woman mayor.
-
A.
San Francisco Board of Supervisors
The San Francisco Board of Supervisors is the city and county’s elected legislative body, responsible for passing local laws, approving budgets, and overseeing municipal agencies.
-
B.
Mayor of San Francisco
The Mayor of San Francisco is the elected chief executive of the City and County of San Francisco, responsible for overseeing city government, implementing local policies, and representing the city at the regional, state, and national levels.
-
C.
Gavin Newsom
Gavin Newsom is an American politician and member of the Democratic Party who serves as the governor of California and is known for his progressive policies on issues such as climate change, healthcare, and social justice.
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D.
Government of San Francisco
The Government of San Francisco is the consolidated city-county administration that manages local legislative, executive, and municipal services for San Francisco, California.
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E.
Sacramento City Council
The Sacramento City Council is the elected governing body responsible for setting policy, passing local laws, and overseeing the municipal government of Sacramento, California.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
mayoral election
ⓘ
special election ⓘ |
| cause | death of Mayor Ed Lee ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electoralSystem | ranked-choice voting ⓘ |
| elects | chief executive of San Francisco municipal government ⓘ |
| follows | Ed Lee mayoralty ⓘ |
| governs |
Government of San Francisco
ⓘ
surface form:
San Francisco city government
|
| hasCandidate |
Angela Alioto
ⓘ
Jane Kim ⓘ London Breed ⓘ Mark Leno ⓘ |
| hasWinner | London Breed ⓘ |
| jurisdiction |
San Francisco County
ⓘ
surface form:
City and County of San Francisco
|
| locatedIn |
California, United States
ⓘ
surface form:
California
San Francisco ⓘ |
| notableFor |
close ranked-choice vote count between London Breed and Mark Leno
ⓘ
election of first Black woman mayor of San Francisco ⓘ |
| officeAssumedBy | London Breed ⓘ |
| officeTitle | Mayor ⓘ |
| partOf |
2018 United States local elections
ⓘ
2018 elections in California ⓘ San Francisco local elections ⓘ |
| positionContested | Mayor of San Francisco ⓘ |
| precedes | San Francisco mayoral election, 2019 ⓘ |
| replaces | acting mayor arrangement after Ed Lee’s death ⓘ |
| resultedIn |
London Breed becoming first Black woman mayor of San Francisco
ⓘ
London Breed becoming first woman elected mayor of San Francisco in a regular election ⓘ London Breed becoming mayor of San Francisco ⓘ |
| uses | instant-runoff voting ⓘ |
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 Francisco mayoral election, 2018 Description of subject: The San Francisco mayoral election of 2018 was a special election in which voters chose a new mayor following the death of Mayor Ed Lee, ultimately resulting in London Breed becoming the city’s first Black woman mayor.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.