Was M0 's prequel executive produced by M1 , written by M3 , produced by a production company , and executive produced by M2
SELECT count(*) WHERE {
?x0 ns:film.film.executive_produced_by M1 .
?x0 ns:film.film.executive_produced_by M2 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x0 ns:film.film.sequel M0 .
?x0 ns:film.film.written_by M3 .
?x1 a ns:film.production_company
}