question: What was a gender of a film director 's American actor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ^ns:people.person.gender ?x1 .
  ?x1 ns:film.actor.film/ns:film.performance.character ?x2 .
  ?x1 ns:people.person.nationality ns:m.09c7w0 .
  ?x2 a ns:film.director
  }