question: Did a art director that influenced M1 , M2 , M3 , M4 , and M5 play M6 and M7
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.actor.film/ns:film.performance.character M6 .
  ?x0 ns:film.actor.film/ns:film.performance.character M7 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x0 ns:influence.influence_node.influenced M3 .
  ?x0 ns:influence.influence_node.influenced M4 .
  ?x0 ns:influence.influence_node.influenced M5
  }