question: What costume designer was employed by a company and was employed by a employer of M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film_costumer_designer .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x2 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
  ?x2 a ns:business.employer
  }