question: Was a screenwriter that directed M3 , M4 , and M5 and edited M2 a person
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.director.film M5 .
  ?x0 ns:film.editor.film M2
  }