Who influenced M1 , was influenced by a film director , was influenced by M4 's star , and influenced M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?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 ?x2 .
?x1 a ns:film.director .
?x2 ns:film.actor.film/ns:film.performance.film M4
}