CREATE TABLE "round_2" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: what was the away team for the north melbourne home team?
SQL: SELECT "away_team" FROM "round_2" WHERE "home_team"='north melbourne';

Question: what was the away team score in a game with north melbourne as home team?
SQL: SELECT "away_team_score" FROM "round_2" WHERE "home_team"='melbourne';

Question: what was the away team with st kilda as the away team?
SQL: SELECT "away_team_score" FROM "round_2" WHERE "away_team"='st kilda';