CREATE TABLE table_3125 ("Episode Number" FLOAT, "Location" TEXT, "Original Airdate" TEXT, "Challenge Winner" TEXT, "Challenge" TEXT)

Who was the challenge winner in the episode that originally aired on January 28, 2009?
SELECT "Challenge Winner" FROM table_3125 WHERE "Original Airdate" = 'January 28, 2009'
SELECT "Challenge Winner" FROM "table_3125" WHERE "Original Airdate" = 'January 28, 2009'