Was a film director influenced by a Mexican producer of M4 , influenced by M1 , and influenced by M2
SELECT count(*) WHERE {
?x0 a ns:film.director .
?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 ns:film.producer.film|ns:film.production_company.films M4 .
?x1 ns:people.person.nationality ns:m.0b90_r
}