Which company was founded by M1 and employed a founder of M2 and M3
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:business.employer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:organization.organization.founders M1 .
?x1 ns:organization.organization_founder.organizations_founded M2 .
?x1 ns:organization.organization_founder.organizations_founded M3
}