CREATE TABLE "round_8" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What was the home team's score when North Melbourne was the away team?
SQL: SELECT "home_team_score" FROM "round_8" WHERE "away_team"='north melbourne';

Question: What was the date of the game when the home team scored 21.18 (144) and the away team scored 16.19 (115)?
SQL: SELECT "date" FROM "round_8" WHERE "home_team_score"='21.18 (144)' AND "away_team_score"='16.19 (115)';

Question: Who was the away team when Geelong was the home team?
SQL: SELECT "away_team" FROM "round_8" WHERE "home_team"='geelong';