Did M2 and M3 employ a male person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.gender ns:m.05zppz .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}