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