CREATE TABLE table_58905 ("Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Opponent in Final" CLOB, "Score in Final" CLOB)

What is Opponent in Final, when Surface is 'Hard', and when Date is '13 January 1992'?
SELECT "Opponent in Final" FROM table_58905 WHERE "Surface" = 'hard' AND "Date" = '13 january 1992'
SELECT "Opponent in Final" FROM "table_58905" WHERE "Date" = '13 january 1992' AND "Surface" = 'hard'