What film producer was influenced by M4 's director , was influenced by M3 , and influenced M1 and M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by M3 .
?x1 ns:film.director.film M4
}