When Richmond was the Home team, who was the away team?
CREATE TABLE "round_1" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "date" text
);
SELECT "away_team" FROM "round_1" WHERE "home_team"='richmond';