question: Which executive producer of M0 , M1 , and M2 was influenced by a art director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.producer.films_executive_produced M0 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x1 a ns:film.film_art_director
  }