CREATE TABLE "round_13" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What is the biggest crowd when carlton is the away squad?
SQL: SELECT MAX("crowd") FROM "round_13" WHERE "away_team"='carlton';

Question: What is the sum of crowd(s) when richmond is the away squad?
SQL: SELECT SUM("crowd") FROM "round_13" WHERE "away_team"='richmond';

Question: What is the home team's score in the game played at glenferrie oval?
SQL: SELECT "home_team_score" FROM "round_13" WHERE "venue"='glenferrie oval';