question: Was a Canadian Swedish person 's employer M3
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }