What was the military rank for the person killed in 1918, born after 1865, and has a MP's Seat in Edinburgh South?
CREATE TABLE "first_world_war" (
  "rank_in_military" text,
  "name" text,
  "born" real,
  "killed" real,
  "political_party" text,
  "mp_s_seat" text
);
SELECT "rank_in_military" FROM "first_world_war" WHERE "killed"=1918 AND "born">1865 AND "mp_s_seat"='edinburgh south';