Who was influenced by a director of M4 , was influenced by M1 and M2 , and influenced a director of M3
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:influence.influence_node.influenced ?x1 .
?x0 ns:influence.influence_node.influenced_by ?x2 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:influence.influence_node.influenced_by M2 .
?x1 ns:film.director.film M3 .
?x2 ns:film.director.film M4
}