Did a company 's employee executive produce M0 's sequel
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x1 ns:film.film.prequel M0 .
?x2 a ns:business.employer
}