Task: Explanation
Input (English): Henry: Portrait of a Serial Killer is a 1986 American psychological horror crime film directed and co-written by John McNaughton about the random crime spree of a serial killer who seemingly operates with impunity. It stars Michael Rooker as the nomadic killer Henry, Tom Towles as Otis, a prison buddy with whom Henry is living, and Tracy Arnold as Becky, Otis's sister. The characters of Henry and Otis are loosely based on real life serial killers Henry Lee Lucas and Ottis Toole. Question: Henry: Portrait of a Serial Killer is a 1986 American psychological horror crime film, the characters of Henry and Otis are loosely based on real life serial killers Henry Lee Lucas and which American drifter and serial killer who was convicted of six counts of murder? Answer: Ottis Toole
Output (English):  The characters of Henry and Otis are loosely based on real life serial killers Henry Lee Lucas and Ottis Toole.