question: Which film producer was influenced by M3 , influenced M1 and M2 , and was influenced by a art director of M4
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x1 ns:film.film_art_director.films_art_directed M4
  }