Was a prequel of M1 's prequel executive produced by M0 and produced by a film distributor
SELECT count(*) WHERE {
?x0 ns:film.film.executive_produced_by M0 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x0 ns:film.film.sequel ?x2 .
?x1 a ns:film.film_distributor .
?x2 ns:film.film.sequel M1
}