Was M2 written by and executive produced by a art director that M1 employed
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.written_by ?x0
}