What film producer influenced a editor of M2 and M3 and was influenced by M1
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced ?x1 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x1 ns:film.editor.film M2 .
?x1 ns:film.editor.film M3
}