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