CREATE TABLE table_45915 ("Date" CLOB, "Round" CLOB, "Opponent" CLOB, "Venue" CLOB, "Result" CLOB, "Attendance" FLOAT)

What is Opponent, when Date is 17 September 1998?
SELECT "Opponent" FROM table_45915 WHERE "Date" = '17 september 1998'
SELECT "Opponent" FROM "table_45915" WHERE "Date" = '17 september 1998'