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