question: Was a gender of a film 's actor M0 's gender
query: SELECT count(*) WHERE {
  ?x0 ^ns:people.person.gender ?x1 .
  ?x0 ^ns:people.person.gender M0 .
  ?x1 ns:film.actor.film/ns:film.performance.character ?x2 .
  ?x2 a ns:film.film
  }