Was a person a male art director of M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.film_art_director.films_art_directed M2 .
?x0 ns:film.film_art_director.films_art_directed M3 .
?x0 ns:film.film_art_director.films_art_directed M4 .
?x0 ns:people.person.gender ns:m.05zppz
}