question: Which film director influenced M1 and M2 , was influenced by M6 , and influenced M3 , M4 , and M5
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.director .
  ?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_by M6
  }