Question: What was the role of  Jeremy Piven in the 2015 American comedy film Entourage?
Sentence (from "Entourage (film)"): It stars the principal cast of the show, Kevin Connolly, Adrian Grenier, Kevin Dillon, Jerry Ferrara and Jeremy Piven, and follows actor Vincent Chase who goes overbudget on his directorial debut and must ask newly-appointed studio head Ari Gold for more money.
Relevant evidence: Yes