Did M5 and M6 employ a film director and employ a Chinese person that M1 and M2 employed
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.nationality ns:m.0d05w3 .
?x1 a ns:film.director .
M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
M6 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M6 ns:business.employer.employees/ns:business.employment_tenure.person ?x1
}