Mark O'Brien
E71143
Mark O'Brien is an American actor best known for his roles in television series such as City on a Hill and Halt and Catch Fire, as well as various film and independent projects.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mark O'Brien canonical | 8 |
| Mark O’Brien | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T566906 — 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 O'Brien Context triple: [City on a Hill, stars, Mark O'Brien]
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A.
Mark O’Brien
Mark O’Brien is an American local politician who has served as the mayor of Augusta, Maine.
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B.
Benjamin Harris
Benjamin Harris was a 17th-century English publisher and bookseller known for printing early colonial American works, including religious and political texts.
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C.
Patrick Dodson
Patrick Dodson is an Australian Aboriginal leader, activist, and politician widely regarded as the "father of reconciliation" for his work advancing Indigenous rights and social justice.
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D.
Jason Hudson
Jason Hudson was the brother of singer and actress Jennifer Hudson, tragically murdered in a widely publicized 2008 family shooting in Chicago.
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E.
Vincent Gaddis
Vincent Gaddis was an American writer and researcher best known for coining and popularizing the modern mystery surrounding the Bermuda Triangle in the mid-20th century.
- 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 O'Brien Target entity description: Mark O'Brien is an American actor best known for his roles in television series such as City on a Hill and Halt and Catch Fire, as well as various film and independent projects.
-
A.
Mark O’Brien
Mark O’Brien is an American local politician who has served as the mayor of Augusta, Maine.
-
B.
Benjamin Harris
Benjamin Harris was a 17th-century English publisher and bookseller known for printing early colonial American works, including religious and political texts.
-
C.
Patrick Dodson
Patrick Dodson is an Australian Aboriginal leader, activist, and politician widely regarded as the "father of reconciliation" for his work advancing Indigenous rights and social justice.
-
D.
Jason Hudson
Jason Hudson was the brother of singer and actress Jennifer Hudson, tragically murdered in a widely publicized 2008 family shooting in Chicago.
-
E.
Vincent Gaddis
Vincent Gaddis was an American writer and researcher best known for coining and popularizing the modern mystery surrounding the Bermuda Triangle in the mid-20th century.
- F. None of above. chosen
Statements (40)
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 O'Brien Description of subject: Mark O'Brien is an American actor best known for his roles in television series such as City on a Hill and Halt and Catch Fire, as well as various film and independent projects.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mark O’Brien
subject surface form:
City on a Hill