Did a film producer employ M1 , M2 , M3 , M4 , and M5 , employ M6 , and employ M7
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M6 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M7
}