Was M4 a production company whose employee and founder wrote M0 , M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
M4 a ns:film.production_company .
M4 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M4 ns:organization.organization.founders ?x0
}