Were M1 and M6 influenced by M2 , influenced by M3 , M4 , and M5 , and influenced by a screenwriter
SELECT count(*) WHERE {
?x0 a ns:film.writer .
M1 ns:influence.influence_node.influenced_by ?x0 .
M1 ns:influence.influence_node.influenced_by M2 .
M1 ns:influence.influence_node.influenced_by M3 .
M1 ns:influence.influence_node.influenced_by M4 .
M1 ns:influence.influence_node.influenced_by M5 .
M6 ns:influence.influence_node.influenced_by ?x0 .
M6 ns:influence.influence_node.influenced_by M2 .
M6 ns:influence.influence_node.influenced_by M3 .
M6 ns:influence.influence_node.influenced_by M4 .
M6 ns:influence.influence_node.influenced_by M5
}