Did a film 's British art director write and direct M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.director.film M0 .
?x0 ns:film.director.film M1 .
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:people.person.nationality ns:m.07ssc .
?x1 a ns:film.film
}