question: Was a American cinematographer that M4 starred a Mexican actor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 a ns:film.cinematographer .
  ?x0 ns:film.actor.film/ns:film.performance.film M4 .
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }