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