Mark Geist
E197308
Mark Geist is a former U.S. Marine and security contractor best known as one of the Benghazi attack survivors whose actions were depicted in the book and film "13 Hours."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark Geist canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T1749678 — 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: Mark Geist Context triple: [Mark "Oz" Geist (13 Hours film character), basedOn, Mark Geist]
-
A.
Jon Oberheide
Jon Oberheide is a cybersecurity entrepreneur and researcher best known as the co-founder and former CTO of Duo Security, a leading multi-factor authentication and zero-trust security company.
-
B.
Jonathan Teplitzky
Jonathan Teplitzky is an Australian film director known for character-driven dramas such as "The Railway Man" and "Burning Man."
-
C.
Michael Gaeta
Michael Gaeta is a film producer best known for his work on genre movies, including the 2011 remake of the horror-comedy "Fright Night."
-
D.
Scott Kroopf
Scott Kroopf is an American film producer known for his work on numerous Hollywood features, including the science-fiction adventure film "Zathura: A Space Adventure."
-
E.
Max Perlich
Max Perlich is an American character actor known for his offbeat, often quirky supporting roles in independent films and television series since the late 1980s.
- 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: Mark Geist Target entity description: Mark Geist is a former U.S. Marine and security contractor best known as one of the Benghazi attack survivors whose actions were depicted in the book and film "13 Hours."
-
A.
Jon Oberheide
Jon Oberheide is a cybersecurity entrepreneur and researcher best known as the co-founder and former CTO of Duo Security, a leading multi-factor authentication and zero-trust security company.
-
B.
Jonathan Teplitzky
Jonathan Teplitzky is an Australian film director known for character-driven dramas such as "The Railway Man" and "Burning Man."
-
C.
Michael Gaeta
Michael Gaeta is a film producer best known for his work on genre movies, including the 2011 remake of the horror-comedy "Fright Night."
-
D.
Scott Kroopf
Scott Kroopf is an American film producer known for his work on numerous Hollywood features, including the science-fiction adventure film "Zathura: A Space Adventure."
-
E.
Max Perlich
Max Perlich is an American character actor known for his offbeat, often quirky supporting roles in independent films and television series since the late 1980s.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
United States Marine Corps veteran
ⓘ
author ⓘ human ⓘ public speaker ⓘ security contractor ⓘ |
| citizenship | United States of America ⓘ |
| coAuthorOf | 13 Hours: The Inside Account of What Really Happened in Benghazi ⓘ |
| conflict | 2012 Benghazi attack ⓘ |
| countryOfService | United States of America ⓘ |
| depictedIn |
book 13 Hours: The Inside Account of What Really Happened in Benghazi
ⓘ
linked to:
13 Hours: The Secret Soldiers of Benghazi
film 13 Hours: The Secret Soldiers of Benghazi ⓘ |
| genre | non-fiction ⓘ |
| hasExperience |
combat operations
ⓘ
protective security operations ⓘ |
| hasOccupation | private security contractor ⓘ |
| hasRole | member of CIA Annex security team in Benghazi ⓘ |
| knownFor |
being one of the security team members during the 2012 Benghazi attack
ⓘ
having his actions depicted in the book 13 Hours ⓘ having his actions depicted in the film 13 Hours ⓘ |
| languageOfWorkOrName | English ⓘ |
| militaryBranch | United States Marine Corps ⓘ |
| militaryRank | Marine ⓘ |
| notableEvent | survived the 2012 Benghazi attack on U.S. facilities in Libya ⓘ |
| notableWork | 13 Hours: The Inside Account of What Really Happened in Benghazi ⓘ |
| occupation |
author
ⓘ
motivational speaker ⓘ security contractor ⓘ |
| participantIn |
defense of the CIA Annex in Benghazi
ⓘ
defense of the U.S. diplomatic compound in Benghazi ⓘ |
| speaksLanguage | English ⓘ |
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: Mark Geist Description of subject: Mark Geist is a former U.S. Marine and security contractor best known as one of the Benghazi attack survivors whose actions were depicted in the book and film "13 Hours."
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Mark "Oz" Geist in 13 Hours: The Secret Soldiers of Benghazi
subject linked to:
book "13 Hours: The Inside Account of What Really Happened in Benghazi"