Was M4 a gender of a cinematographer whose employer employed M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 a ns:film.cinematographer .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
M4 ^ns:people.person.gender ?x0
}