question: What costume designer that influenced M1 , M2 , and M3 and influenced M4 , M5 , and M6 was M7 's director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film_costumer_designer .
  ?x0 ns:film.director.film 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 .
  ?x0 ns:influence.influence_node.influenced M6
  }