CREATE TABLE table_32383 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Who is the away team at the game at MCG with the crowd is larger than 15,500?
SELECT "Away team" FROM table_32383 WHERE "Crowd" > '15,500' AND "Venue" = 'mcg'
SELECT "Away team" FROM "table_32383" WHERE "Crowd" > '15,500' AND "Venue" = 'mcg'