question: Was a film 's star , cinematographer , and writer M0 's editor
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
  ?x0 ns:film.cinematographer.film ?x1 .
  ?x0 ns:film.editor.film M0 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 a ns:film.film
  }