Which screenwriter was employed by a production company , was employed by M1 , and founded M3 's employer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.writer .
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x2 a ns:film.production_company
}