question: Was M3 's American director influenced by M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M3 .
  ?x0 ns:influence.influence_node.influenced_by M0 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:people.person.nationality ns:m.09c7w0
  }