question: Which actor wrote and edited a film that M3 directed and M2 edited
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x1 a ns:film.film .
  ?x1 ns:film.film.directed_by M3 .
  ?x1 ns:film.film.edited_by M2
  }