Did M1 executive produce M0 's prequel , produce M3 , and executive produce M2
SELECT count(*) WHERE {
?x0 ns:film.film.sequel M0 .
M1 ns:film.producer.films_executive_produced ?x0 .
M1 ns:film.producer.films_executive_produced M2 .
M1 ns:film.producer.film|ns:film.production_company.films M3
}