CREATE TABLE table_65381 ("Nation" TEXT, "Birth date" TEXT, "Height  ( m ) " TEXT, "Weight  ( kg ) " TEXT, "World Rank" TEXT)

what is the nation when the height (m) is 1.91 and the weight (kg) is 99?
SELECT "Nation" FROM table_65381 WHERE "Height (m)" = '1.91' AND "Weight (kg)" = '99'
SELECT "Nation" FROM "table_65381" WHERE "Height (m)" = '1.91' AND "Weight (kg)" = '99'