question: What director of M2 , M3 , and M4 was influenced by a person and influenced by M0 and M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M0 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x1 a ns:people.person
  }