Which film producer founded M5 , founded M6 , and was employed by M1 , M2 , M3 , and M4
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?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 M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M4
}