CREATE TABLE table_79496 ("Athlete" TEXT, "Nationality" TEXT, "2.15" TEXT, "2.20" TEXT, "2.25" TEXT, "Result" FLOAT)

Which athlete from Brazil has 2.20 O and 2.25 of XXX?
SELECT "Athlete" FROM table_79496 WHERE "2.20" = 'o' AND "2.25" = 'xxx' AND "Nationality" = 'brazil'
SELECT "Athlete" FROM "table_79496" WHERE "2.20" = 'o' AND "2.25" = 'xxx' AND "Nationality" = 'brazil'