question: What Swedish person was a cinematographer whose country of nationality employed M3
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 a ns:people.person .
  ?x0 ns:people.person.nationality ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3
  }