Was M0 's prequel directed by M6 , written by M2 , M3 , M4 , and M5 , and executive produced by M1
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by M6 .
?x0 ns:film.film.executive_produced_by M1 .
?x0 ns:film.film.sequel M0 .
?x0 ns:film.film.written_by M2 .
?x0 ns:film.film.written_by M3 .
?x0 ns:film.film.written_by M4 .
?x0 ns:film.film.written_by M5
}