Was a Swedish film producer that a film 's sequel starred M1
SELECT count(*) WHERE {
?x0 ns:film.film.prequel ?x1 .
?x1 a ns:film.film .
M1 a ns:film.producer .
M1 ns:film.actor.film/ns:film.performance.film ?x0 .
M1 ns:people.person.nationality ns:m.0d0vqn
}