Was M3 written by a film distributor that M1 founded and M2 was employed by
SELECT count(*) WHERE {
?x0 a ns:film.film_distributor .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:organization.organization.founders M1 .
M3 ns:film.film.written_by ?x0
}