CREATE TABLE table_56497 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

When did Geelong play as the away team?
SELECT "Date" FROM table_56497 WHERE "Away team" = 'geelong'
SELECT "Date" FROM "table_56497" WHERE "Away team" = 'geelong'