Question: Black Nativity is a 2013 American musical drama film directed by Kasi Lemmons, the film stars an African American ensemble cast featuring which American hip hop recording artist, record producer, actor and entrepreneur, better known by his stage name, called what? 
Facts:
Black Nativity (film) stars an African American ensemble cast featuring Nas
Nas is known by his stage name Nas
Nas is an American hip hop recording artist, record producer, actor and entrepreneur.
Answer: Nas