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