Complex sentence: Gibson starred in Franco Zeffirelli's "Hamlet" in 1990, portraying the eponymous character of William Shakespeare's tragedy of the same name; it was the first film produced by Icon Productions, a production company he co-founded alongside Bruce Davey.
Split into simpler sentences: Gibson starred in Franco Zeffirelli's "Hamlet" in 1990, as the title character of William Shakespeare's tragedy of the same name. It was the first film produced by Icon Productions, a production company he co-founded alongside Bruce Davey.