Was a writer and cinematographer of M1 , M2 , M3 , and M4 a actor
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 ns:film.cinematographer.film M1 .
?x0 ns:film.cinematographer.film M2 .
?x0 ns:film.cinematographer.film M3 .
?x0 ns:film.cinematographer.film M4 .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
?x0 ns:film.writer.film M4
}