Did M1 employ M2 and M3 , employ a actor , employ M4 , and employ a actor
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x1 a ns:film.actor .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
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
}