question: What did M1 , M2 , and M3 direct , M4 , M5 , and M6 direct , and M0 produce
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.directed_by M3 .
  ?x0 ns:film.film.directed_by M4 .
  ?x0 ns:film.film.directed_by M5 .
  ?x0 ns:film.film.directed_by M6 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M0
  }