Which film producer was influenced by M2 , M3 , and M4 , influenced M1 , and influenced a screenwriter
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced ?x1 .
?x0 ns:influence.influence_node.influenced 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 .
?x1 a ns:film.writer
}