Was M2 employed by M3 , employed by M0 's employer , employed by a film distributor , and employed by M4
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x1 a ns:film.film_distributor .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company M4
}