Which male employee of M0 was employed by M1
SELECT DISTINCT ?x0 WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.gender ns:m.05zppz
}