Did a art director influence a actor and influence M2 's director
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:influence.influence_node.influenced ?x1 .
?x0 ns:influence.influence_node.influenced ?x2 .
?x1 a ns:film.actor .
?x2 ns:film.director.film M2
}