question: Were M2 and M3 employed by a British character 's country of nationality
query: SELECT count(*) WHERE {
  ?x0 ^ns:people.person.nationality ?x1 .
  ?x1 a ns:fictional_universe.fictional_character .
  ?x1 ns:people.person.nationality ns:m.07ssc .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M3 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
  }