What is Date, when Away Team is Kangaroos?
CREATE TABLE "group_a" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "crowd" real,
  "date" text
);
SELECT "date" FROM "group_a" WHERE "away_team"='kangaroos';