premise: Riddick is played by Vin Diesel.
hypothesis: Riddick (character) . Actor Vin Diesel has played the title role in all of the Riddick-based films and video games so far . Riddick (film) . Produced by and starring Vin Diesel as the title character , Riddick is written and directed by David Twohy , who previously wrote and directed the first two installments , Pitch Black ( 2000 ) and The Chronicles of Riddick ( 2004 ) .