Who executive produced M1 , directed M3 's prequel , and directed M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film ?x1 .
?x0 ns:film.director.film M2 .
?x0 ns:film.producer.films_executive_produced M1 .
?x1 ns:film.film.sequel M3
}