killing of Philip Barton Key II
E696452
The killing of Philip Barton Key II was a highly publicized 1859 Washington, D.C. murder in which Congressman Daniel Sickles shot and killed the U.S. Attorney for the District of Columbia over an alleged affair, leading to the first successful use of a temporary insanity defense in American legal history.
All labels observed (1)
| Label | Occurrences |
|---|---|
| killing of Philip Barton Key II canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7891331 — 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: killing of Philip Barton Key II Context triple: [Daniel Sickles, notableEvent, killing of Philip Barton Key II]
-
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 J. P. Saunders
The Assassination of J. P. Saunders was a pivotal 1928 revolutionary act in the Indian independence movement, carried out in Lahore as retaliation for the death of Lala Lajpat Rai and significantly elevating the prominence of its young nationalist perpetrators.
-
C.
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.
-
D.
Death of Thomas J. "Stonewall" Jackson
The Death of Thomas J. "Stonewall" Jackson refers to the passing of the famed Confederate general in May 1863 from complications after being wounded at the Battle of Chancellorsville.
-
E.
assassination of Spencer Perceval
The assassination of Spencer Perceval was the 1812 shooting of the British Prime Minister in the House of Commons, the only successful assassination of a UK prime minister in history.
- 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: killing of Philip Barton Key II Target entity description: The killing of Philip Barton Key II was a highly publicized 1859 Washington, D.C. murder in which Congressman Daniel Sickles shot and killed the U.S. Attorney for the District of Columbia over an alleged affair, leading to the first successful use of a temporary insanity defense in American legal history.
-
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 J. P. Saunders
The Assassination of J. P. Saunders was a pivotal 1928 revolutionary act in the Indian independence movement, carried out in Lahore as retaliation for the death of Lala Lajpat Rai and significantly elevating the prominence of its young nationalist perpetrators.
-
C.
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.
-
D.
Death of Thomas J. "Stonewall" Jackson
The Death of Thomas J. "Stonewall" Jackson refers to the passing of the famed Confederate general in May 1863 from complications after being wounded at the Battle of Chancellorsville.
-
E.
assassination of Spencer Perceval
The assassination of Spencer Perceval was the 1812 shooting of the British Prime Minister in the House of Commons, the only successful assassination of a UK prime minister in history.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
historical event
ⓘ
legal case ⓘ murder ⓘ |
| hasCharge | murder ⓘ |
| hasCity | Washington ⓘ |
| hasContext |
19th-century American legal history
ⓘ
political scandal in the United States ⓘ |
| hasCountry |
United States
ⓘ
linked to:
United States of America
|
| hasDate | 1859 ⓘ |
| hasDefendant | Daniel Sickles ⓘ |
| hasDefense | temporary insanity ⓘ |
| hasJurisdiction | District of Columbia ⓘ |
| hasLegalDefenseType | insanity defense ⓘ |
| hasLegalSignificance | first successful use of temporary insanity defense in American legal history ⓘ |
| hasLocation | Washington, D.C. ⓘ |
| hasMannerOfDeath | shooting ⓘ |
| hasMotive | alleged extramarital affair ⓘ |
| hasNotability | notable U.S. criminal case involving a sitting Congressman ⓘ |
| hasOutcome | acquittal ⓘ |
| hasPerpetrator | Daniel Sickles ⓘ |
| hasPerpetratorName |
Daniel Edgar Sickles
ⓘ
linked to:
Daniel Sickles
|
| hasPerpetratorOccupation | United States Congressman ⓘ |
| hasPerpetratorOffice | Member of the United States House of Representatives ⓘ |
| hasPublicity | highly publicized ⓘ |
| hasRelationTo | history of the insanity defense in the United States ⓘ |
| hasTemporalContext | pre–American Civil War era ⓘ |
| hasVictim | Philip Barton Key II ⓘ |
| hasVictimName | Philip Barton Key II ⓘ |
| hasVictimOccupation | U.S. Attorney for the District of Columbia ⓘ |
| hasWeapon | firearm ⓘ |
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: killing of Philip Barton Key II Description of subject: The killing of Philip Barton Key II was a highly publicized 1859 Washington, D.C. murder in which Congressman Daniel Sickles shot and killed the U.S. Attorney for the District of Columbia over an alleged affair, leading to the first successful use of a temporary insanity defense in American legal history.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.