Were M2 and M4 influenced by a screenwriter , influenced by M3 , and influenced by a cinematographer of M1
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x1 ns:film.cinematographer.film M1 .
M2 ns:influence.influence_node.influenced_by ?x0 .
M2 ns:influence.influence_node.influenced_by ?x1 .
M2 ns:influence.influence_node.influenced_by M3 .
M4 ns:influence.influence_node.influenced_by ?x0 .
M4 ns:influence.influence_node.influenced_by ?x1 .
M4 ns:influence.influence_node.influenced_by M3
}