CREATE TABLE table_44504 ("Date" CLOB, "Time" CLOB, "Score" CLOB, "Set 1" CLOB, "Set 2" CLOB, "Set 3" CLOB, "Total" CLOB)

Which Date has a Set 1 of 21 25?
SELECT "Date" FROM table_44504 WHERE "Set 1" = '21–25'
SELECT "Date" FROM "table_44504" WHERE "Set 1" = '21–25'