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 played away in the game that the home team scored 7.8 (50)?
SQL: SELECT "away_team" FROM "round_4" WHERE "home_team_score"='7.8 (50)';

Question: What did the home team score when the away team scored 6.8 (44)?
SQL: SELECT "home_team_score" FROM "round_4" WHERE "away_team_score"='6.8 (44)';