Was M1 a company that M4 was employed by , M3 founded , and a screenwriter founded
SELECT count(*) WHERE {
?x0 a ns:film.writer .
M1 a ns:business.employer .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M3
}