CREATE TABLE "round_20" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: On what date did the away team Melbourne play?
SQL: SELECT "date" FROM "round_20" WHERE "away_team"='melbourne';

Question: What home team played the away team South Melbourne?
SQL: SELECT "home_team" FROM "round_20" WHERE "away_team"='south melbourne';

Question: What is the name of the away team that played a home team who scored 11.16 (82)?
SQL: SELECT "away_team" FROM "round_20" WHERE "home_team_score"='11.16 (82)';

Question: What is the name of the away team that scored 15.9 (99)?
SQL: SELECT "away_team" FROM "round_20" WHERE "away_team_score"='15.9 (99)';