Was M1 's prequel 's French costume designer 's employer M2
SELECT count(*) WHERE {
?x0 ns:film.film_costumer_designer.costume_design_for_film ?x1 .
?x0 ns:people.person.nationality ns:m.0f8l9c .
?x1 ns:film.film.sequel M1 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}