Was a film director influenced by a person , influenced by M1 , and influenced by M2 's executive producer
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by ?x2 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x1 ns:film.producer.films_executive_produced M2 .
?x2 a ns:people.person
}