CREATE TABLE "round_15" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: Which away team's Venue is western oval?
SQL: SELECT "away_team" FROM "round_15" WHERE "venue"='western oval';

Question: What date did the Home team score 11.21 (87)?
SQL: SELECT "date" FROM "round_15" WHERE "home_team_score"='11.21 (87)';