Premise: Brian Helgeland . He is most known for writing the screenplays for L.A. Confidential ( for which he received the Academy Award for Best Adapted Screenplay ) , Mystic River , and A Nightmare on Elm Street 4 : The Dream Master . Mystic River is a 2003 American mystery drama film directed and scored by Clint Eastwood .
Hypothesis: Brian Helgeland wrote for a Clint Eastwood film.
Label: ENTAILMENT