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