Was M3 executive produced and produced by a screenwriter that M1 and M2 were written by
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
M3 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}