Were M3 and M4 influenced by M1 's Swedish art director and influenced by M2 's writer
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed M1 .
?x0 ns:people.person.nationality ns:m.0d0vqn .
?x1 ns:film.writer.film M2 .
M3 ns:influence.influence_node.influenced_by ?x0 .
M3 ns:influence.influence_node.influenced_by ?x1 .
M4 ns:influence.influence_node.influenced_by ?x0 .
M4 ns:influence.influence_node.influenced_by ?x1
}