question: Did M0 and M3 produce and edit M1 and M2
query: SELECT count(*) WHERE {
  M0 ns:film.editor.film M1 .
  M0 ns:film.editor.film M2 .
  M0 ns:film.producer.film|ns:film.production_company.films M1 .
  M0 ns:film.producer.film|ns:film.production_company.films M2 .
  M3 ns:film.editor.film M1 .
  M3 ns:film.editor.film M2 .
  M3 ns:film.producer.film|ns:film.production_company.films M1 .
  M3 ns:film.producer.film|ns:film.production_company.films M2
  }