Was a film director that M1 influenced a cinematographer of M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:film.cinematographer.film M2 .
?x0 ns:film.cinematographer.film M3 .
?x0 ns:film.cinematographer.film M4 .
?x0 ns:influence.influence_node.influenced_by M1
}