Were M1 , M2 , M3 , M4 , M5 , and M6 employed by a film distributor
SELECT count(*) WHERE {
?x0 a ns:film.film_distributor .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M3 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M4 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M5 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M6 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
}