question: Who edited M1 and M2 , wrote M4 's prequel , directed M3 , and produced a film
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
  ?x0 ns:film.writer.film ?x2 .
  ?x1 a ns:film.film .
  ?x2 ns:film.film.sequel M4
  }