CREATE TABLE table_69646 ("Tournament" CLOB, "Date" CLOB, "Surface" CLOB, "Round" CLOB, "Opponent" CLOB)

Name the surface for united airlines tournament of champions final round
SELECT "Surface" FROM table_69646 WHERE "Tournament" = 'united airlines tournament of champions' AND "Round" = 'final'
SELECT "Surface" FROM "table_69646" WHERE "Round" = 'final' AND "Tournament" = 'united airlines tournament of champions'