Was a film producer 's employee employed by a film distributor and employed by M0
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x1 a ns:film.producer .
?x2 a ns:film.film_distributor
}