CREATE TABLE table_7981 ("Res." CLOB, "Record" CLOB, "Opponent" CLOB, "Method" CLOB, "Event" CLOB, "Round" FLOAT, "Time" CLOB, "Location" CLOB)

In which location did the fight last just 0:31?
SELECT "Location" FROM table_7981 WHERE "Time" = '0:31'
SELECT "Location" FROM "table_7981" WHERE "Time" = '0:31'