question: Was a person that M1 and M2 were edited by and executive produced by M3 's cinematographer
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.cinematographer.film M3 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2
  }