Did M5 and M6 influence a film producer that M1 , M2 , M3 , and M4 influenced
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:influence.influence_node.influenced_by M2 .
?x0 ns:influence.influence_node.influenced_by M3 .
?x0 ns:influence.influence_node.influenced_by M4 .
M5 ns:influence.influence_node.influenced ?x0 .
M6 ns:influence.influence_node.influenced ?x0
}