Which employee and founder of M0 did M1 employ
SELECT DISTINCT ?x0 WHERE {
?x0 ns:organization.organization_founder.organizations_founded M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1
}