What was the crowd size of the match where the home team scored 7.7 (49) against Geelong?
CREATE TABLE "round_10" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);
SELECT SUM("crowd") FROM "round_10" WHERE "home_team_score"='7.7 (49)' AND "away_team"='geelong';