CREATE TABLE table_51516 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

What was the date when the away team was Carlton?
SELECT "Date" FROM table_51516 WHERE "Away team" = 'carlton'
SELECT "Date" FROM "table_51516" WHERE "Away team" = 'carlton'