Did M1 and M5 produce M3 and M4 , direct M0 's prequel , and edit M2
SELECT count(*) WHERE {
?x0 ns:film.film.sequel M0 .
M1 ns:film.director.film ?x0 .
M1 ns:film.editor.film M2 .
M1 ns:film.producer.film|ns:film.production_company.films M3 .
M1 ns:film.producer.film|ns:film.production_company.films M4 .
M5 ns:film.director.film ?x0 .
M5 ns:film.editor.film M2 .
M5 ns:film.producer.film|ns:film.production_company.films M3 .
M5 ns:film.producer.film|ns:film.production_company.films M4
}