Question: When did the director of film Unman, Wittering And Zigo (Film) die?
Sentence (from "John Mackenzie (film director)"): John Leonard Duncan Mackenzie (22 May 1928 – 8 June 2011) was a Scottish film director who worked in British film from the late 1960s, first as an assistant director and later as an independent director himself.
Relevant evidence: Yes