Was a film editor influenced by M1 , influenced by M2 , and influenced by a art director
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:influence.influence_node.influenced_by M2 .
?x1 a ns:film.film_art_director
}