John O'Mara
E598660
John O'Mara is a tough, principled World War II veteran-turned-LAPD sergeant who leads an off-the-books squad to take down mob boss Mickey Cohen in the film "Gangster Squad."
All labels observed (1)
| Label | Occurrences |
|---|---|
| John O'Mara canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6333219 — 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: John O'Mara Context triple: [Gangster Squad, mainCharacter, John O'Mara]
-
A.
Roger O'Connor
Roger O'Connor was an Irish nationalist and writer known for his radical political views in the late 18th and early 19th centuries.
-
B.
Kevin O'Dowd
Kevin O'Dowd is the brother of British singer Boy George and has been involved in managing and supporting aspects of his sibling's career.
-
C.
Patrick Doherty
Patrick Doherty was one of the unarmed civil rights marchers shot and killed by British soldiers during the Bloody Sunday massacre in Derry, Northern Ireland, in 1972.
-
D.
Paul McDermott
Paul McDermott is an Australian comedian, writer, television host, and singer best known for his work with the comedy group The Doug Anthony All Stars and as a longtime host on the satirical news quiz show "Good News Week."
-
E.
John Doherty
John Doherty is known as the husband of American actress Michael Learned, famed for her role as Olivia Walton on the television series "The Waltons."
- 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: John O'Mara Target entity description: John O'Mara is a tough, principled World War II veteran-turned-LAPD sergeant who leads an off-the-books squad to take down mob boss Mickey Cohen in the film "Gangster Squad."
-
A.
Roger O'Connor
Roger O'Connor was an Irish nationalist and writer known for his radical political views in the late 18th and early 19th centuries.
-
B.
Kevin O'Dowd
Kevin O'Dowd is the brother of British singer Boy George and has been involved in managing and supporting aspects of his sibling's career.
-
C.
Patrick Doherty
Patrick Doherty was one of the unarmed civil rights marchers shot and killed by British soldiers during the Bloody Sunday massacre in Derry, Northern Ireland, in 1972.
-
D.
Paul McDermott
Paul McDermott is an Australian comedian, writer, television host, and singer best known for his work with the comedy group The Doug Anthony All Stars and as a longtime host on the satirical news quiz show "Good News Week."
-
E.
John Doherty
John Doherty is known as the husband of American actress Michael Learned, famed for her role as Olivia Walton on the television series "The Waltons."
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
fictional character
ⓘ
film character ⓘ |
| appearsIn | Gangster Squad ⓘ |
| appearsInFilmDirectedBy | Ruben Fleischer ⓘ |
| appearsInFilmReleasedIn | 2013 ⓘ |
| associatedWith |
Gangster Squad (LAPD unit)
ⓘ
linked to:
elite LAPD unit Gangster Squad
|
| basedOn |
real-life LAPD Sgt. John O'Mara
ⓘ
linked to:
LAPD officer Rafael Pérez
|
| characterTrait |
principled
ⓘ
tough ⓘ |
| conflictParticipatedIn | World War II ⓘ |
| filmCharacterType | lawman ⓘ |
| genreContext |
crime film
ⓘ
gangster film ⓘ |
| goal | take down mob boss Mickey Cohen ⓘ |
| hasBackground | World War II veteran ⓘ |
| leads | off-the-books LAPD squad ⓘ |
| militaryService | United States Army ⓘ |
| moralAlignment | lawful good ⓘ |
| nationality | American ⓘ |
| occupation |
LAPD sergeant
ⓘ
police officer ⓘ |
| opposes | Mickey Cohen ⓘ |
| portrayedBy | Josh Brolin ⓘ |
| roleInNarrative | protagonist ⓘ |
| setting | Los Angeles ⓘ |
| timePeriod | late 1940s ⓘ |
| worksFor | Los Angeles Police Department ⓘ |
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: John O'Mara Description of subject: John O'Mara is a tough, principled World War II veteran-turned-LAPD sergeant who leads an off-the-books squad to take down mob boss Mickey Cohen in the film "Gangster Squad."
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.