question: Was a person a character that directed , edited , and wrote M2
query: SELECT count(*) WHERE {
  ?x0 a ns:fictional_universe.fictional_character .
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.writer.film M2
  }