Which film director influenced M1 , M2 , and M3 , influenced M4 , M5 , and M6 , and influenced M7
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.director .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:influence.influence_node.influenced M3 .
?x0 ns:influence.influence_node.influenced M4 .
?x0 ns:influence.influence_node.influenced M5 .
?x0 ns:influence.influence_node.influenced M6 .
?x0 ns:influence.influence_node.influenced M7
}