Which writer of M1 , M2 , M3 , and M4 was a British actor
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.actor .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
?x0 ns:film.writer.film M4 .
?x0 ns:people.person.nationality ns:m.07ssc
}