Which company employed M3 , employed M4 , M5 , and M6 , and was founded by M1 and M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:business.employer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M6 .
?x0 ns:organization.organization.founders M1 .
?x0 ns:organization.organization.founders M2
}