CREATE TABLE "group_c" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "ground" text,
  "crowd" real,
  "date" text
);

Question: When was the home team score 17.5 (107)?
SQL: SELECT "date" FROM "group_c" WHERE "home_team_score"='17.5 (107)';

Question: What was the away team when the home was st kilda?
SQL: SELECT "away_team" FROM "group_c" WHERE "home_team"='st kilda';

Question: Who was the away team on sunday, 13 february?
SQL: SELECT "away_team" FROM "group_c" WHERE "date"='sunday, 13 february';