question: Was M0 a Swedish cinematographer that M2 and M3 employed
query: SELECT count(*) WHERE {
  M0 a ns:film.cinematographer .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  M0 ns:people.person.nationality ns:m.0d0vqn
  }