Which Election had 2nd Member George Alexander Morrison, a 1st Party of Unionist, and 3rd Member of John Buchan?
CREATE TABLE "members_of_parliament" (
  "election" text,
  "1st_member" text,
  "1st_party" text,
  "2nd_member" text,
  "2nd_party" text,
  "3rd_member" text,
  "3rd_party" text
);
SELECT "election" FROM "members_of_parliament" WHERE "2nd_member"='george alexander morrison' AND "1st_party"='unionist' AND "3rd_member"='john buchan';