What writer of M0 , M1 , M2 , and M3 was influenced by M4
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
?x0 ns:influence.influence_node.influenced_by M4
}