Alton Prison site
E427470
The Alton Prison site is the location of a former Civil War–era Confederate prison in Alton, Illinois, now preserved and interpreted as a historic landmark.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Alton Prison site canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4259837 — 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: Alton Prison site Context triple: [Alton, Illinois, hasLandmark, Alton Prison site]
-
A.
Lincoln Prison
Lincoln Prison is a correctional facility located in the city of Lincoln in Lincolnshire, England.
-
B.
Missouri State Penitentiary historic site
The Missouri State Penitentiary historic site is a former maximum-security prison turned museum and tour destination, known for its 19th-century architecture, notorious inmates, and reputation as one of the oldest and most infamous prisons in the United States.
-
C.
Illinois State Penitentiary at Joliet
The Illinois State Penitentiary at Joliet was a historic maximum-security prison in Joliet, Illinois, known for housing notable inmates and for its iconic limestone architecture featured in popular culture.
-
D.
Holman Correctional Facility
Holman Correctional Facility is a maximum-security state prison in Alabama known for housing the state's death row and execution chamber.
-
E.
Old Fort Prison complex
The Old Fort Prison complex is a historic Johannesburg jail, notorious for incarcerating anti-apartheid activists including Nelson Mandela and Mahatma Gandhi, now incorporated into the Constitutional Court precinct as a memorial site.
- 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: Alton Prison site Target entity description: The Alton Prison site is the location of a former Civil War–era Confederate prison in Alton, Illinois, now preserved and interpreted as a historic landmark.
-
A.
Lincoln Prison
Lincoln Prison is a correctional facility located in the city of Lincoln in Lincolnshire, England.
-
B.
Missouri State Penitentiary historic site
The Missouri State Penitentiary historic site is a former maximum-security prison turned museum and tour destination, known for its 19th-century architecture, notorious inmates, and reputation as one of the oldest and most infamous prisons in the United States.
-
C.
Illinois State Penitentiary at Joliet
The Illinois State Penitentiary at Joliet was a historic maximum-security prison in Joliet, Illinois, known for housing notable inmates and for its iconic limestone architecture featured in popular culture.
-
D.
Holman Correctional Facility
Holman Correctional Facility is a maximum-security state prison in Alabama known for housing the state's death row and execution chamber.
-
E.
Old Fort Prison complex
The Old Fort Prison complex is a historic Johannesburg jail, notorious for incarcerating anti-apartheid activists including Nelson Mandela and Mahatma Gandhi, now incorporated into the Constitutional Court precinct as a memorial site.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
former prison site
ⓘ
historic site ⓘ |
| adjacentTo | Mississippi River bluffs NERFINISHED ⓘ |
| category |
American Civil War prison camps
ⓘ
Historic sites in Illinois ⓘ Military facilities in Illinois ⓘ Tourist attractions in Madison County, Illinois ⓘ |
| closed | 1865 ⓘ |
| controlledBy | United States government NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentUse |
historic landmark
ⓘ
outdoor interpretive site ⓘ tourist attraction ⓘ |
| hasHeritageDesignation | historic landmark ⓘ |
| hasNearbyFeature | Mississippi River NERFINISHED ⓘ |
| hasPart |
commemorative plaques
ⓘ
interpretive markers ⓘ remains of prison structures ⓘ stone walls remnants ⓘ |
| hasVisitorInformation | interpretive signage about Civil War prison ⓘ |
| heritageStatus | preserved historic site ⓘ |
| locatedIn |
Alton, Illinois
NERFINISHED
ⓘ
Illinois ⓘ Madison County, Illinois NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn | William Street, Alton, Illinois NERFINISHED ⓘ |
| maintainedBy | local authorities ⓘ |
| memorializes |
Civil War dead associated with the prison
ⓘ
prisoners held at Alton Military Prison ⓘ |
| notableFor |
harsh confinement conditions
ⓘ
high prisoner mortality ⓘ overcrowded Civil War prison conditions ⓘ smallpox outbreaks among prisoners ⓘ |
| opened | 1862 ⓘ |
| operatedBy | Union Army NERFINISHED ⓘ |
| ownedBy | City of Alton NERFINISHED ⓘ |
| partOf | American Civil War prison system NERFINISHED ⓘ |
| significantEvent | American Civil War NERFINISHED ⓘ |
| significantPeriod | American Civil War NERFINISHED ⓘ |
| significantTheme |
Civil War military history
ⓘ
Union–Confederate conflict ⓘ prisoner of war history ⓘ public health in wartime prisons ⓘ |
| usedAs |
Civil War prison
ⓘ
Confederate prison ⓘ military prison ⓘ |
| usedFor |
holding Confederate prisoners of war
ⓘ
holding civilian prisoners ⓘ holding 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: Alton Prison site Description of subject: The Alton Prison site is the location of a former Civil War–era Confederate prison in Alton, Illinois, now preserved and interpreted as a historic landmark.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.