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