Which production company that M2 was acquired by and M3 was acquired by did M1 found
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.production_company .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M2 .
?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
?x0 ns:organization.organization.founders M1
}