question: Was M2 employed by M1 's female editor 's country of nationality
query: SELECT count(*) WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x1 ns:film.editor.film M1 .
  ?x1 ns:people.person.gender ns:m.02zsn .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
  }