Was a art director influenced by M1 and influenced by a actor of M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x1 ns:film.actor.film/ns:film.performance.character M2 .
?x1 ns:film.actor.film/ns:film.performance.character M3 .
?x1 ns:film.actor.film/ns:film.performance.character M4
}