Who founded M3 's employer , founded M1 , and was employed by M2 's employer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x2 ns:business.employer.employees/ns:business.employment_tenure.person M2
}