CREATE TABLE "round_18" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);

Question: What is the sum of crowds that saw hawthorn at home?
SQL: SELECT SUM("crowd") FROM "round_18" WHERE "home_team"='hawthorn';

Question: What away side scores 10.17 (77)?
SQL: SELECT "away_team" FROM "round_18" WHERE "away_team_score"='10.17 (77)';

Question: Who is the home side when the away side scores 10.17 (77)?
SQL: SELECT "home_team" FROM "round_18" WHERE "away_team_score"='10.17 (77)';