Question: When is the director of film Nattbuss 807 's birthday?
Sentence (from "Nattbuss 807"): Nattbuss 807 ("Night Bus 807") is a Swedish thriller film (based on the real murder of a young skinhead in 1992) which was released to cinemas in Sweden on 28 February 1997, directed by David Flamholc.
Relevant evidence: Yes