CREATE TABLE table_50494 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Ground" TEXT, "Crowd" FLOAT, "Date" TEXT)

When the crowd is larger than 12,314 and the home team score is 17.7 (109), what is the away team score?
SELECT "Away team score" FROM table_50494 WHERE "Crowd" > '12,314' AND "Home team score" = '17.7 (109)'
SELECT "Away team score" FROM "table_50494" WHERE "Crowd" > '12,314' AND "Home team score" = '17.7 (109)'