Did M1 produce a film 's sequel and executive produce M2 , M3 , M4 , and M5
SELECT count(*) WHERE {
?x0 ns:film.film.prequel ?x1 .
?x1 a ns:film.film .
M1 ns:film.producer.films_executive_produced M2 .
M1 ns:film.producer.films_executive_produced M3 .
M1 ns:film.producer.films_executive_produced M4 .
M1 ns:film.producer.films_executive_produced M5 .
M1 ns:film.producer.film|ns:film.production_company.films ?x0
}