Read this: Some biographical accounts include the autobiography Life on the Color Line: The True Story of a White Boy Who Discovered He Was Black by Gregory Howard Williams; One Drop: My Father's Hidden Life—A Story of Race and Family Secrets written by Bliss Broyard about her father Anatole Broyard; the documentary Colored White Boy about a white man in North Carolina who discovers that he is the descendant of a white plantation owner and a raped African slave; and the documentary on The Sanders Women of Shreveport, Louisiana.

What documentary features a black man in North Carolina?
What is the answer? (If it cannot be answered, return "unanswerable")
unanswerable