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