Did M1 's sequel 's producer edit M0 's sequel
SELECT count(*) WHERE {
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.producer.film|ns:film.production_company.films ?x2 .
?x1 ns:film.film.prequel M0 .
?x2 ns:film.film.prequel M1
}