Was M1 distributed by M2 , distributed by M3 , and produced by a employee of M0
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
M1 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M2 .
M1 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor M3 .
M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}