Who was a film director that founded M4 and M5 , was employed by M2 and M3 , and founded M6
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.director .
?x0 a ns:people.person .
?x0 ns:organization.organization_founder.organizations_founded M4 .
?x0 ns:organization.organization_founder.organizations_founded M5 .
?x0 ns:organization.organization_founder.organizations_founded M6 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3
}