Were M1 and M4 influenced by M2 and M3 and influenced by a film 's sequel 's director
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?x1 ns:film.film.prequel ?x2 .
?x2 a ns:film.film .
M1 ns:influence.influence_node.influenced_by ?x0 .
M1 ns:influence.influence_node.influenced_by M2 .
M1 ns:influence.influence_node.influenced_by M3 .
M4 ns:influence.influence_node.influenced_by ?x0 .
M4 ns:influence.influence_node.influenced_by M2 .
M4 ns:influence.influence_node.influenced_by M3
}