Mark Lerner
E324846
Mark Lerner is an American businessman best known as a principal owner of the Washington Nationals Major League Baseball team and the son of real estate magnate Ted Lerner.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mark Lerner canonical | 3 |
| Mark D. Lerner | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2873445 — 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 Lerner Context triple: [Ted Lerner, child, Mark Lerner]
-
A.
Ted Lerner
Ted Lerner was an American real estate developer and principal owner of the Washington Nationals Major League Baseball team.
-
B.
Michele Lerner
Michele Lerner is known primarily as the third wife of American lyricist and playwright Alan Jay Lerner.
-
C.
Marty Katz
Marty Katz is a film producer known for his work on movies such as the World War II drama "The Great Raid."
-
D.
Lawrence Bender
Lawrence Bender is an American film producer best known for his longtime collaboration with Quentin Tarantino on influential films such as "Pulp Fiction" and the "Kill Bill" series.
-
E.
Johnny Gandelsman
Johnny Gandelsman is a Grammy-winning violinist and producer known for his work with ensembles like Brooklyn Rider and the Silk Road Ensemble, as well as for his innovative solo projects.
- 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 Lerner Target entity description: Mark Lerner is an American businessman best known as a principal owner of the Washington Nationals Major League Baseball team and the son of real estate magnate Ted Lerner.
-
A.
Ted Lerner
Ted Lerner was an American real estate developer and principal owner of the Washington Nationals Major League Baseball team.
-
B.
Michele Lerner
Michele Lerner is known primarily as the third wife of American lyricist and playwright Alan Jay Lerner.
-
C.
Marty Katz
Marty Katz is a film producer known for his work on movies such as the World War II drama "The Great Raid."
-
D.
Lawrence Bender
Lawrence Bender is an American film producer best known for his longtime collaboration with Quentin Tarantino on influential films such as "Pulp Fiction" and the "Kill Bill" series.
-
E.
Johnny Gandelsman
Johnny Gandelsman is a Grammy-winning violinist and producer known for his work with ensembles like Brooklyn Rider and the Silk Road Ensemble, as well as for his innovative solo projects.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
businessperson
ⓘ
human ⓘ sports team owner ⓘ |
| basedIn |
Washington metropolitan area
ⓘ
surface form:
Washington, D.C. metropolitan area
|
| boardMemberOf |
Washington Nationals
ⓘ
surface form:
Washington Nationals Baseball Club
|
| countryOfCitizenship | United States of America ⓘ |
| employer | Lerner Enterprises ⓘ |
| familyName | Lerner ⓘ |
| fieldOfWork |
professional sports management
ⓘ
real estate ⓘ |
| genre | Major League Baseball ownership ⓘ |
| givenName | Mark ⓘ |
| industry |
real estate industry
ⓘ
sports industry ⓘ |
| languageOfWorkOrName | English ⓘ |
| memberOf |
Washington Nationals
ⓘ
surface form:
Washington Nationals ownership group
|
| notableFor |
leadership transition of Nationals ownership from Ted Lerner
ⓘ
principal owner of the Washington Nationals ⓘ |
| notableWork | leadership of Washington Nationals franchise ⓘ |
| occupation |
businessman
ⓘ
real estate executive ⓘ sports executive ⓘ |
| owns | Washington Nationals ⓘ |
| parent | Ted Lerner ⓘ |
| partOf | Lerner family ⓘ |
| positionHeld |
managing principal owner of the Washington Nationals
ⓘ
principal owner of the Washington Nationals ⓘ |
| relative | Ted Lerner ⓘ |
| residence | Maryland ⓘ |
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 Lerner Description of subject: Mark Lerner is an American businessman best known as a principal owner of the Washington Nationals Major League Baseball team and the son of real estate magnate Ted Lerner.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mark D. Lerner