Complex sentence: He adapted it for a highly acclaimed, award-winning 2005 HBO film, in which the parts would be played by different people, that won him the Humanitas Prize and earned Emmy and Writers Guild of America Award nominations.
Split into simpler sentences: He adapted it for a highly acclaimed, award-winning 2005 HBO film, in which the parts were played by different people. He won the Humanitas Prize and earned Emmy and Writers Guild of America Award nominations.