question: Was M2 M1 's prequel 's British costume designer 's country of nationality
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_costumer_designer.costume_design_for_film ?x1 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x1 ns:film.film.sequel M1 .
  M2 ^ns:people.person.nationality ?x0
  }