Jeff Hephner
E391834
Jeff Hephner is an American actor known for his roles in television series such as "Mars," "Chicago Fire," and "Boss."
All labels observed (1)
| Label | Occurrences |
|---|---|
| Jeff Hephner canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T3820236 — 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: Jeff Hephner Context triple: [Mars (TV series), mainCastMember, Jeff Hephner]
-
A.
Roy M. Huffington
Roy M. Huffington was an American oilman, founder of Huffco, and former U.S. Ambassador to Austria.
-
B.
Jeff Weiner
Jeff Weiner is an American business executive best known for serving as the longtime CEO of LinkedIn, where he oversaw the company’s rapid growth and acquisition by Microsoft.
-
C.
Randy Page
Randy Page is a public figure whose name is notably associated with the surname Page, though specific widely recognized biographical details about him are limited.
-
D.
Edward Zuckerberg
Edward Zuckerberg is an American dentist and technology enthusiast best known as the father of Facebook co-founder Mark Zuckerberg.
-
E.
Alexis Ohanian
Alexis Ohanian is an American internet entrepreneur and investor best known as the co-founder of the social news and discussion platform Reddit.
- 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: Jeff Hephner Target entity description: Jeff Hephner is an American actor known for his roles in television series such as "Mars," "Chicago Fire," and "Boss."
-
A.
Roy M. Huffington
Roy M. Huffington was an American oilman, founder of Huffco, and former U.S. Ambassador to Austria.
-
B.
Jeff Weiner
Jeff Weiner is an American business executive best known for serving as the longtime CEO of LinkedIn, where he oversaw the company’s rapid growth and acquisition by Microsoft.
-
C.
Randy Page
Randy Page is a public figure whose name is notably associated with the surname Page, though specific widely recognized biographical details about him are limited.
-
D.
Edward Zuckerberg
Edward Zuckerberg is an American dentist and technology enthusiast best known as the father of Facebook co-founder Mark Zuckerberg.
-
E.
Alexis Ohanian
Alexis Ohanian is an American internet entrepreneur and investor best known as the co-founder of the social news and discussion platform Reddit.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
actor
ⓘ
film actor ⓘ human ⓘ television actor ⓘ |
| activeIn | 21st century ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| familyName | Hephner ⓘ |
| fieldOfWork |
film acting
ⓘ
television acting ⓘ |
| genre |
crime drama
ⓘ
drama ⓘ medical drama ⓘ science fiction television ⓘ |
| givenName | Jeff ⓘ |
| hasIMDbId | nm0374784 ⓘ |
| languageSpoken | English ⓘ |
| name | Jeff Hephner ⓘ |
| notableRole |
Ben Zajac in Boss
ⓘ
Jeff Clarke in Chicago Fire ⓘ Jeff Clarke in Chicago Med ⓘ John Case in Agent X ⓘ Kurt Hurrelle in Mars ⓘ |
| notableWork |
Agent X
ⓘ
An Acceptable Loss ⓘ Boss ⓘ CSI: Miami ⓘ Chicago Fire ⓘ Chicago Med ⓘ Chicago P.D. ⓘ Code Black ⓘ Drop Dead Diva ⓘ Easy Money ⓘ Hellcats ⓘ Interstellar ⓘ Law & Order: Criminal Intent ⓘ Maid in Manhattan ⓘ Mars ⓘ NCIS ⓘ Peppermint ⓘ Private Practice ⓘ The 19th Wife ⓘ The Jury ⓘ The O.C. ⓘ The Shuroo Process ⓘ |
| occupation | actor ⓘ |
| sexOrGender | male ⓘ |
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: Jeff Hephner Description of subject: Jeff Hephner is an American actor known for his roles in television series such as "Mars," "Chicago Fire," and "Boss."
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.