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