question: What costume designer of M1 's prequel was a employee of a film distributor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film_costumer_designer.costume_design_for_film ?x1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
  ?x1 ns:film.film.sequel M1 .
  ?x2 a ns:film.film_distributor
  }