question: Who influenced M1 , M2 , M3 , and M4 and was influenced by a director and editor of M5 and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?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_by ?x1 .
  ?x1 ns:film.director.film M5 .
  ?x1 ns:film.director.film M6 .
  ?x1 ns:film.editor.film M5 .
  ?x1 ns:film.editor.film M6
  }