question: Did a actor that directed M6 write M2 , M3 , and M4 , write M5 , and edit M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.director.film M6 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:film.writer.film M3 .
  ?x0 ns:film.writer.film M4 .
  ?x0 ns:film.writer.film M5
  }