Was M1 directed by M0 's actor and directed by M2 and M3
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.character M0 .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.directed_by M2 .
M1 ns:film.film.directed_by M3
}