CREATE TABLE table_name_65 (competition VARCHAR, date VARCHAR, year VARCHAR, surface VARCHAR)

Which competition has a Year of 2008, a Surface of carpet, and a Date of 31 jan?
SELECT competition FROM table_name_65 WHERE year = 2008 AND surface = "carpet" AND date = "31 jan"
SELECT "competition" FROM "table_name_65" WHERE "31 jan" = "date" AND "carpet" = "surface" AND "year" = 2008