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