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