question: Did a Canadian costume designer 's country of nationality employ M0 and M1 and employ M2 and M3
query: SELECT count(*) WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  ?x1 a ns:film.film_costumer_designer .
  ?x1 ns:people.person.nationality ns:m.0d060g
  }