What did a writer of M2 and M3 write , M0 write , and M1 produce
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.produced_by|ns:film.film.production_companies M1 .
?x0 ns:film.film.written_by ?x1 .
?x0 ns:film.film.written_by M0 .
?x1 ns:film.writer.film M2 .
?x1 ns:film.writer.film M3
}