What film producer was influenced by M1 's prequel 's director and executive producer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x1 ns:film.director.film ?x2 .
?x1 ns:film.producer.films_executive_produced ?x2 .
?x2 ns:film.film.sequel M1
}