Who was employed by a production company founded by M3 and founded by M4 and M5 and founded M1
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 a ns:film.production_company .
?x1 ns:organization.organization.founders M3 .
?x1 ns:organization.organization.founders M4 .
?x1 ns:organization.organization.founders M5
}