Washington Arsenal Penitentiary
E536016
Washington Arsenal Penitentiary was a Civil War–era military prison in Washington, D.C., best known as the site where several Lincoln assassination conspirators were held and executed.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Washington Arsenal Penitentiary canonical | 4 |
| Old Capitol Prison | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5553120 — 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: Washington Arsenal Penitentiary Context triple: [George Atzerodt, executedAt, Washington Arsenal Penitentiary]
-
A.
Lincoln Prison
Lincoln Prison is a correctional facility located in the city of Lincoln in Lincolnshire, England.
-
B.
Vincennes Prison
Vincennes Prison was a notorious French state prison and fortress near Paris, historically used to detain political prisoners and notable figures such as Honoré Gabriel Riqueti, comte de Mirabeau.
-
C.
Tegel Prison
Tegel Prison is a Berlin correctional facility historically known for holding political prisoners during the Nazi era, including theologian and resistance member Dietrich Bonhoeffer.
-
D.
Holmesburg Prison
Holmesburg Prison was a notorious Philadelphia correctional facility known for its harsh conditions, high-profile inmates, and later-revealed unethical medical experiments on prisoners.
-
E.
Litchfield Penitentiary
Litchfield Penitentiary is the fictional women’s federal prison that serves as the primary backdrop for the television series "Orange Is the New Black."
- 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: Washington Arsenal Penitentiary Target entity description: Washington Arsenal Penitentiary was a Civil War–era military prison in Washington, D.C., best known as the site where several Lincoln assassination conspirators were held and executed.
-
A.
Lincoln Prison
Lincoln Prison is a correctional facility located in the city of Lincoln in Lincolnshire, England.
-
B.
Vincennes Prison
Vincennes Prison was a notorious French state prison and fortress near Paris, historically used to detain political prisoners and notable figures such as Honoré Gabriel Riqueti, comte de Mirabeau.
-
C.
Tegel Prison
Tegel Prison is a Berlin correctional facility historically known for holding political prisoners during the Nazi era, including theologian and resistance member Dietrich Bonhoeffer.
-
D.
Holmesburg Prison
Holmesburg Prison was a notorious Philadelphia correctional facility known for its harsh conditions, high-profile inmates, and later-revealed unethical medical experiments on prisoners.
-
E.
Litchfield Penitentiary
Litchfield Penitentiary is the fictional women’s federal prison that serves as the primary backdrop for the television series "Orange Is the New Black."
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Civil War-era prison
ⓘ
military prison ⓘ |
| city | Washington ⓘ |
| conspiratorExecuted |
David Herold
ⓘ
George Atzerodt ⓘ Lewis Powell ⓘ Mary Surratt ⓘ |
| conspiratorHeld |
David Herold
ⓘ
George Atzerodt ⓘ Lewis Powell ⓘ Mary Surratt ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dateOfNotableEvent | 1865-07-07 ⓘ |
| demolished | true ⓘ |
| district | District of Columbia ⓘ |
| historicalEra |
American Civil War era
ⓘ
linked to:
American Civil War
|
| knownFor |
Civil War-era military imprisonment
ⓘ
site of execution of Lincoln assassination conspirators ⓘ |
| laterSiteOf |
Fort Lesley J. McNair
ⓘ
linked to:
Fort McNair
|
| locatedNear | Potomac River ⓘ |
| locatedOn | Arsenal grounds in Washington, D.C. ⓘ |
| location | Washington, D.C. ⓘ |
| notableEvent |
execution of Lincoln assassination conspirators
ⓘ
imprisonment of Lincoln assassination conspirators ⓘ |
| operatedBy | United States Army ⓘ |
| partOf | Washington Arsenal ⓘ |
| usedDuringConflict | American Civil War ⓘ |
| usedFor |
detention of Lincoln assassination conspirators
ⓘ
detention of military prisoners ⓘ detention of political prisoners ⓘ |
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: Washington Arsenal Penitentiary Description of subject: Washington Arsenal Penitentiary was a Civil War–era military prison in Washington, D.C., best known as the site where several Lincoln assassination conspirators were held and executed.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.