What producer of a film 's sequel and prequel did M0 employ
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x1 ns:film.film.prequel ?x2 .
?x1 ns:film.film.sequel ?x2 .
?x2 a ns:film.film
}