What was a company that employed a employee of M3 and employed a founder of M1 and M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:business.employer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
?x1 ns:organization.organization_founder.organizations_founded M1 .
?x1 ns:organization.organization_founder.organizations_founded M2 .
?x2 ns:people.person.employment_history/ns:business.employment_tenure.company M3
}