Did M1 employ M2 and M3 , employ a employee of M0 , and employ M4 , M5 , and M6
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person M6
}