Which art director influenced a director of M2 and M3 and influenced M1
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:influence.influence_node.influenced ?x1 .
?x0 ns:influence.influence_node.influenced M1 .
?x1 ns:film.director.film M2 .
?x1 ns:film.director.film M3
}