CREATE TABLE "round_4" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What team was the away team when Footscray was the home team?
SQL: SELECT "away_team" FROM "round_4" WHERE "home_team"='footscray';

Question: What was the size of the crowd when North Melbourne was the home team?
SQL: SELECT "crowd" FROM "round_4" WHERE "home_team"='north melbourne';

Question: What date were there more than 16,000 people in the crowd and Carlton was the home team?
SQL: SELECT "date" FROM "round_4" WHERE "crowd">'16,000' AND "home_team"='carlton';

Question: What was the largest crowd when Collingwood was the away team?
SQL: SELECT MAX("crowd") FROM "round_4" WHERE "away_team"='collingwood';