United States Penitentiary, Florence ADX
E179845
United States Penitentiary, Florence ADX is a federal supermax prison in Colorado known for housing some of the most dangerous and high-profile inmates in the United States under extremely restrictive conditions.
All labels observed (8)
How this entity was disambiguated
This entity first appeared as the object of triple T1578898 — 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: United States Penitentiary, Florence ADX Context triple: [Timothy McVeigh, heldAt, United States Penitentiary, Florence ADX]
-
A.
Pelican Bay State Prison
Pelican Bay State Prison is a maximum-security California state prison known for housing some of the state's most dangerous inmates and for its controversial Security Housing Unit (SHU).
-
B.
United States Penitentiary, Leavenworth
United States Penitentiary, Leavenworth is a historic federal prison in Kansas known for housing some of the most notorious American criminals of the 20th century.
-
C.
Clinton Correctional Facility
Clinton Correctional Facility is a maximum-security state prison in Dannemora, New York, known for housing high-profile inmates and its long-standing role in the New York prison system.
-
D.
Suitland Federal Center
Suitland Federal Center is a major U.S. federal office complex in Suitland, Maryland, that houses several government agencies and serves as a key hub for federal statistical and intelligence operations.
-
E.
Lewisburg Federal Penitentiary
Lewisburg Federal Penitentiary is a high-security United States federal prison for male inmates located in Lewisburg, Pennsylvania.
- 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: United States Penitentiary, Florence ADX Target entity description: United States Penitentiary, Florence ADX is a federal supermax prison in Colorado known for housing some of the most dangerous and high-profile inmates in the United States under extremely restrictive conditions.
-
A.
Pelican Bay State Prison
Pelican Bay State Prison is a maximum-security California state prison known for housing some of the state's most dangerous inmates and for its controversial Security Housing Unit (SHU).
-
B.
United States Penitentiary, Leavenworth
United States Penitentiary, Leavenworth is a historic federal prison in Kansas known for housing some of the most notorious American criminals of the 20th century.
-
C.
Clinton Correctional Facility
Clinton Correctional Facility is a maximum-security state prison in Dannemora, New York, known for housing high-profile inmates and its long-standing role in the New York prison system.
-
D.
Suitland Federal Center
Suitland Federal Center is a major U.S. federal office complex in Suitland, Maryland, that houses several government agencies and serves as a key hub for federal statistical and intelligence operations.
-
E.
Lewisburg Federal Penitentiary
Lewisburg Federal Penitentiary is a high-security United States federal prison for male inmates located in Lewisburg, Pennsylvania.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
United States federal government facility
ⓘ
federal prison ⓘ supermax prison ⓘ |
| alsoKnownAs |
ADX Florence
ⓘ
USP Florence ADMAX ⓘ the Alcatraz of the Rockies ⓘ |
| cellConfinementTime | approximately 23 hours per day ⓘ |
| cellType | single-occupancy cells ⓘ |
| country | United States of America ⓘ |
| designedFor |
high-risk inmates
ⓘ
inmates requiring the highest security level ⓘ long-term isolation ⓘ |
| hasFeature |
extensive electronic surveillance
ⓘ
limited human contact ⓘ multiple security perimeters ⓘ reinforced concrete cells ⓘ remote location ⓘ secure exercise yards ⓘ |
| hasInmatePopulationType |
adult inmates
ⓘ
federal inmates ⓘ male inmates ⓘ |
| jurisdiction | federal ⓘ |
| knownFor |
extremely restrictive conditions of confinement
ⓘ
housing high-profile federal inmates ⓘ housing inmates convicted of espionage ⓘ housing inmates convicted of organized crime offenses ⓘ housing inmates convicted of terrorism-related offenses ⓘ housing inmates convicted of violent crimes ⓘ |
| locatedIn | Florence, Colorado ⓘ |
| location | Fremont County, Colorado ⓘ |
| managedBy | United States Department of Justice ⓘ |
| notableCharacteristic |
highest security federal prison in the United States
ⓘ
symbol of the U.S. supermax prison model ⓘ |
| opened | 1994 ⓘ |
| operator | Federal Bureau of Prisons ⓘ |
| partOf |
United States Penitentiary, Florence ADX
self-linksurface differs
ⓘ
surface form:
Federal Correctional Complex, Florence
United States federal prison system ⓘ |
| purpose |
to confine inmates deemed the most dangerous in the federal system
ⓘ
to prevent inmate attacks on staff ⓘ to prevent inmate escape ⓘ to prevent inmate-on-inmate violence ⓘ |
| regardedAs | one of the most secure prisons in the world ⓘ |
| securityClassification | supermax ⓘ |
| status | operational ⓘ |
| subjectTo |
Federal Bureau of Prisons regulations
ⓘ
United States federal law ⓘ |
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: United States Penitentiary, Florence ADX Description of subject: United States Penitentiary, Florence ADX is a federal supermax prison in Colorado known for housing some of the most dangerous and high-profile inmates in the United States under extremely restrictive conditions.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Federal Correctional Institution Florence
this entity surface form:
United States Penitentiary Florence High
this entity surface form:
Federal Correctional Institution, Florence
this entity surface form:
United States Penitentiary, Florence High
this entity surface form:
Florence Federal Correctional Complex
United States Penitentiary, Florence ADX
→
partOf
→
United States Penitentiary, Florence ADX
self-linksurface differs
ⓘ
this entity surface form:
Federal Correctional Complex, Florence
this entity surface form:
United States Penitentiary, Administrative Maximum Facility