question: Who was a Canadian male cinematographer whose employer employed M4 and M5
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 a ns:people.person .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.gender ns:m.05zppz .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M5
  }