Was a film director influenced by M2 's director and influenced by a film editor
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by ?x2 .
?x1 a ns:film.editor .
?x2 ns:film.director.film M2
}