Question: Do director of film Sweet Sweetback's Baadasssss Song and director of film David Copperfield (1969 film) share the same nationality?
Sentence (from "David Copperfield (1969 film)"): Among other well- known actors featured were Richard Attenborough, Laurence Olivier, Susan Hampshire, Cyril Cusack, Wendy Hiller, Edith Evans, Michael Redgrave and Ron Moody.
Relevant evidence: No