question: Was a film editor a person that M2 starred and was executive produced by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 a ns:people.person .
  ?x0 ns:film.actor.film/ns:film.performance.film M2 .
  ?x0 ns:film.producer.films_executive_produced M2
  }