question: Who was a star , cinematographer , writer , and editor of M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.actor.film/ns:film.performance.film M1 .
  ?x0 ns:film.actor.film/ns:film.performance.film M2 .
  ?x0 ns:film.cinematographer.film M1 .
  ?x0 ns:film.cinematographer.film M2 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2
  }