Were M3 and M4 influenced by a screenwriter that directed M1 and M2
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:film.director.film M1 .
?x0 ns:film.director.film M2 .
M3 ns:influence.influence_node.influenced_by ?x0 .
M4 ns:influence.influence_node.influenced_by ?x0
}