Was M1 a company whose employee directed , produced , and wrote M0 's sequel
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 ns:film.film.prequel M0 .
M1 a ns:business.employer .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}