Was M2 employed by a film distributor , employed by a film producer , and employed by M3
SELECT count(*) WHERE {
?x0 a ns:film.film_distributor .
?x1 a ns:film.producer .
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
}