murder of William McKinley
E723138
The murder of William McKinley was the 1901 assassination of the 25th U.S. president, carried out by anarchist Leon Czolgosz and leading to McKinley’s death and Theodore Roosevelt’s succession to the presidency.
All labels observed (2)
| Label | Occurrences |
|---|---|
| assassination of William McKinley | 1 |
| murder of William McKinley canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8277989 — 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: murder of William McKinley Context triple: [Leon Czolgosz, convictedOf, murder of William McKinley]
-
A.
assassination of James A. Garfield
The assassination of James A. Garfield was the 1881 shooting of the 20th U.S. president, which led to his death and highlighted serious flaws in medical treatment and the patronage-based political system of the era.
-
B.
Assassination of Abraham Lincoln
The Assassination of Abraham Lincoln was the 1865 killing of the 16th U.S. president by John Wilkes Booth at Ford’s Theatre in Washington, D.C., an event that shocked the nation and profoundly shaped the aftermath of the Civil War.
-
C.
Haymarket affair
The Haymarket affair was an 1886 labor protest and bombing in Chicago that became a pivotal moment in the history of workers’ rights and the labor movement in the United States.
-
D.
Assassination of John F. Kennedy
The Assassination of John F. Kennedy was the 1963 killing of the 35th U.S. president in Dallas, Texas, an event that shocked the world and has since been the subject of extensive investigation and controversy.
-
E.
assassination of Pancho Villa
The assassination of Pancho Villa was the 1923 killing of the famed Mexican revolutionary leader Francisco "Pancho" Villa, an event that marked the violent end of his political and military influence in post-revolutionary Mexico.
- 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: murder of William McKinley Target entity description: The murder of William McKinley was the 1901 assassination of the 25th U.S. president, carried out by anarchist Leon Czolgosz and leading to McKinley’s death and Theodore Roosevelt’s succession to the presidency.
-
A.
assassination of James A. Garfield
The assassination of James A. Garfield was the 1881 shooting of the 20th U.S. president, which led to his death and highlighted serious flaws in medical treatment and the patronage-based political system of the era.
-
B.
Assassination of Abraham Lincoln
The Assassination of Abraham Lincoln was the 1865 killing of the 16th U.S. president by John Wilkes Booth at Ford’s Theatre in Washington, D.C., an event that shocked the nation and profoundly shaped the aftermath of the Civil War.
-
C.
Haymarket affair
The Haymarket affair was an 1886 labor protest and bombing in Chicago that became a pivotal moment in the history of workers’ rights and the labor movement in the United States.
-
D.
Assassination of John F. Kennedy
The Assassination of John F. Kennedy was the 1963 killing of the 35th U.S. president in Dallas, Texas, an event that shocked the world and has since been the subject of extensive investigation and controversy.
-
E.
assassination of Pancho Villa
The assassination of Pancho Villa was the 1923 killing of the famed Mexican revolutionary leader Francisco "Pancho" Villa, an event that marked the violent end of his political and military influence in post-revolutionary Mexico.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
assassination
ⓘ
historical event ⓘ political assassination ⓘ |
| hasAlternativeName |
McKinley assassination
ⓘ
assassination of William McKinley ⓘ |
| hasCasualties | 1 fatality ⓘ |
| hasCauseOfDeath | gangrene from bullet wounds ⓘ |
| hasContext |
Pan-American Exposition of 1901
NERFINISHED
ⓘ
U.S. Progressive Era NERFINISHED ⓘ |
| hasCountry |
United States of America
ⓘ
surface form:
United States
|
| hasDate | 1901-09-06 ⓘ |
| hasGovernmentResponse |
crackdown on anarchist organizations in the United States
ⓘ
increased Secret Service role in presidential protection ⓘ |
| hasHistoricalPeriod | early 20th century ⓘ |
| hasInjured | William McKinley NERFINISHED ⓘ |
| hasLegacy | influenced future presidential security protocols in the United States ⓘ |
| hasLocation |
Buffalo, New York
NERFINISHED
ⓘ
Pan-American Exposition NERFINISHED ⓘ Temple of Music NERFINISHED ⓘ |
| hasMedicalTreatmentLocation | Buffalo, New York NERFINISHED ⓘ |
| hasMethod | shooting ⓘ |
| hasMotive |
anarchism
ⓘ
anti-government sentiment ⓘ |
| hasNotableAttendee |
Ida McKinley
NERFINISHED
ⓘ
Theodore Roosevelt NERFINISHED ⓘ |
| hasPerpetrator | Leon Czolgosz NERFINISHED ⓘ |
| hasPerpetratorCitizenship | United States NERFINISHED ⓘ |
| hasPerpetratorIdeology | anarchism ⓘ |
| hasPerpetratorName | Leon Czolgosz NERFINISHED ⓘ |
| hasSecurityDetail | United States Secret Service NERFINISHED ⓘ |
| hasSignificance |
last U.S. presidential assassination of the 19th-century style political climate
ⓘ
led to Theodore Roosevelt becoming youngest U.S. president at that time ⓘ |
| hasSubsequentEvent |
death of William McKinley on 1901-09-14
ⓘ
execution of Leon Czolgosz ⓘ trial of Leon Czolgosz NERFINISHED ⓘ |
| hasVictim | William McKinley NERFINISHED ⓘ |
| hasVictimRole | President of the United States ⓘ |
| hasWeapon | revolver ⓘ |
| hasYear | 1901 ⓘ |
| ledToVicePresidentBecomingPresident | Theodore Roosevelt NERFINISHED ⓘ |
| occurredDuringPresidencyOf | William McKinley NERFINISHED ⓘ |
| resultedIn |
death of William McKinley
ⓘ
increased security for U.S. presidents ⓘ presidency of Theodore Roosevelt ⓘ public backlash against anarchism in the United States ⓘ succession of Theodore Roosevelt ⓘ |
| targetedOfficeHolder | 25th president of the United States ⓘ |
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: murder of William McKinley Description of subject: The murder of William McKinley was the 1901 assassination of the 25th U.S. president, carried out by anarchist Leon Czolgosz and leading to McKinley’s death and Theodore Roosevelt’s succession to the presidency.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
assassination of William McKinley