Was a production company that M1 was distributed by acquired by M2
SELECT count(*) WHERE {
?x0 a ns:film.production_company .
?x0 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M1 .
?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2
}