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