Did M1 and M4 direct M3 , edit a sequel of M0 , and produce M2
SELECT count(*) WHERE {
?x0 ns:film.film.prequel M0 .
M1 ns:film.director.film M3 .
M1 ns:film.editor.film ?x0 .
M1 ns:film.producer.film|ns:film.production_company.films M2 .
M4 ns:film.director.film M3 .
M4 ns:film.editor.film ?x0 .
M4 ns:film.producer.film|ns:film.production_company.films M2
}