question: Was M0 a American person that M2 was directed by and was executive produced by
query: SELECT count(*) WHERE {
  M0 a ns:people.person .
  M0 ns:film.director.film M2 .
  M0 ns:film.producer.films_executive_produced M2 .
  M0 ns:people.person.nationality ns:m.09c7w0
  }