1962 Alcatraz escape
E695428
The 1962 Alcatraz escape was a famous prison break from the supposedly inescapable Alcatraz Federal Penitentiary, in which three inmates vanished and sparked decades of speculation about their fate.
All labels observed (3)
| Label | Occurrences |
|---|---|
| 1962 Alcatraz escape canonical | 2 |
| Alcatraz 1962 breakout | 1 |
| Anglin–Morris escape group | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7797128 — 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: 1962 Alcatraz escape Context triple: [Clarence Anglin, participantIn, 1962 Alcatraz escape]
-
A.
Biddle brothers prison escape
The Biddle brothers prison escape was a sensational 1902 jailbreak in Pittsburgh, Pennsylvania, in which two convicted murderers were aided by the warden’s wife, inspiring later books and films.
-
B.
Occupation of Alcatraz
The Occupation of Alcatraz was a 19-month Native American protest (1969–1971) in which activists seized Alcatraz Island to demand recognition of Indigenous rights and treaty obligations, becoming a catalyst for the modern Native American civil rights movement.
-
C.
Birdman of Alcatraz
Birdman of Alcatraz is the infamous nickname of Robert Stroud, a convicted murderer who became renowned for his extensive study and care of birds while incarcerated.
-
D.
Raid at Cabanatuan
Raid at Cabanatuan was a World War II rescue mission in the Philippines in which U.S. Army Rangers and Filipino guerrillas freed hundreds of Allied prisoners of war from a Japanese camp.
-
E.
Escape at Dannemora
Escape at Dannemora is a true-crime drama miniseries depicting the 2015 Clinton Correctional Facility prison break and the relationships that enabled it.
- 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: 1962 Alcatraz escape Target entity description: The 1962 Alcatraz escape was a famous prison break from the supposedly inescapable Alcatraz Federal Penitentiary, in which three inmates vanished and sparked decades of speculation about their fate.
-
A.
Biddle brothers prison escape
The Biddle brothers prison escape was a sensational 1902 jailbreak in Pittsburgh, Pennsylvania, in which two convicted murderers were aided by the warden’s wife, inspiring later books and films.
-
B.
Occupation of Alcatraz
The Occupation of Alcatraz was a 19-month Native American protest (1969–1971) in which activists seized Alcatraz Island to demand recognition of Indigenous rights and treaty obligations, becoming a catalyst for the modern Native American civil rights movement.
-
C.
Birdman of Alcatraz
Birdman of Alcatraz is the infamous nickname of Robert Stroud, a convicted murderer who became renowned for his extensive study and care of birds while incarcerated.
-
D.
Raid at Cabanatuan
Raid at Cabanatuan was a World War II rescue mission in the Philippines in which U.S. Army Rangers and Filipino guerrillas freed hundreds of Allied prisoners of war from a Japanese camp.
-
E.
Escape at Dannemora
Escape at Dannemora is a true-crime drama miniseries depicting the 2015 Clinton Correctional Facility prison break and the relationships that enabled it.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
criminal event
ⓘ
historical event ⓘ prison escape ⓘ unsolved disappearance ⓘ |
| alsoKnownAs |
1962 escape from Alcatraz
NERFINISHED
ⓘ
Alcatraz escape of June 1962 ⓘ |
| bodyDiscovered | no ⓘ |
| contributedTo | public fascination with Alcatraz ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| date | 1962-06-11 ⓘ |
| escapeRoute |
Alcatraz shoreline
NERFINISHED
ⓘ
cell ventilation ducts ⓘ prison roof ⓘ utility corridor ⓘ |
| FBICaseStatus | closed ⓘ |
| FBIConclusion | escapees likely drowned ⓘ |
| FBIInvestigationDuration | 17 years ⓘ |
| followedBy | increased security reviews ⓘ |
| hasMediaAdaptation | Escape from Alcatraz (film) NERFINISHED ⓘ |
| hasUnresolvedQuestion | whether the escapees survived the swim to the mainland ⓘ |
| inspiredWork | Escape from Alcatraz (1979 film) NERFINISHED ⓘ |
| jurisdiction |
Federal Bureau of Investigation
NERFINISHED
ⓘ
United States Marshals Service NERFINISHED ⓘ |
| localPoliceCaseStatus | open ⓘ |
| locatedIn | San Francisco Bay NERFINISHED ⓘ |
| location |
Alcatraz Federal Penitentiary
NERFINISHED
ⓘ
Alcatraz Island NERFINISHED ⓘ |
| notableFor |
breach of a maximum security prison
ⓘ
challenging Alcatraz’s reputation as inescapable ⓘ ingenious escape methods ⓘ |
| numberOfInmatesInvolved | 3 ⓘ |
| participant |
Clarence Anglin
NERFINISHED
ⓘ
Frank Morris NERFINISHED ⓘ John Anglin NERFINISHED ⓘ |
| partOf | history of Alcatraz Federal Penitentiary ⓘ |
| plannedBy | Frank Morris NERFINISHED ⓘ |
| precededBy | earlier escape attempts from Alcatraz ⓘ |
| prisonerStatus | missing ⓘ |
| result |
fate of escapees unknown
ⓘ
inmates disappeared ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| subjectOf |
numerous documentaries
ⓘ
television programs ⓘ true crime books ⓘ |
| usedObject |
dummy heads
ⓘ
improvised tools ⓘ makeshift raft ⓘ raincoat life vests ⓘ ventilation shafts ⓘ |
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: 1962 Alcatraz escape Description of subject: The 1962 Alcatraz escape was a famous prison break from the supposedly inescapable Alcatraz Federal Penitentiary, in which three inmates vanished and sparked decades of speculation about their fate.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
John Anglin
this entity surface form:
Anglin–Morris escape group
subject surface form:
John Anglin
this entity surface form:
Alcatraz 1962 breakout