CREATE TABLE table_68434 ("Date" CLOB, "City" CLOB, "Event" CLOB, "Winner" CLOB, "Prize" CLOB)

Ram Vaswani was a winner on what date?
SELECT "Date" FROM table_68434 WHERE "Winner" = 'ram vaswani'
SELECT "Date" FROM "table_68434" WHERE "Winner" = 'ram vaswani'