Did M1 and M4 influence M2 and M3 and influence a writer and executive producer of a film
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 a ns:film.film .
M1 ns:influence.influence_node.influenced ?x0 .
M1 ns:influence.influence_node.influenced M2 .
M1 ns:influence.influence_node.influenced M3 .
M4 ns:influence.influence_node.influenced ?x0 .
M4 ns:influence.influence_node.influenced M2 .
M4 ns:influence.influence_node.influenced M3
}