Were M1 and M2 directed by and produced by a star and writer of a film
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 a ns:film.film .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}