CREATE TABLE table_71678 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score" TEXT)

Which tournament had Lubomira Bacheva as the opponent in the final?
SELECT "Tournament" FROM table_71678 WHERE "Opponent in the final" = 'lubomira bacheva'
SELECT "Tournament" FROM "table_71678" WHERE "Opponent in the final" = 'lubomira bacheva'