Did M1 write M2 , write M3 and M4 , executive produce M0 's sequel , and write M5
SELECT count(*) WHERE {
?x0 ns:film.film.prequel M0 .
M1 ns:film.producer.films_executive_produced ?x0 .
M1 ns:film.writer.film M2 .
M1 ns:film.writer.film M3 .
M1 ns:film.writer.film M4 .
M1 ns:film.writer.film M5
}