CREATE TABLE table_203_61 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

which country was ranked as the top in the 1999 all africa games ?
SELECT "nation" FROM table_203_61 ORDER BY "rank" LIMIT 1
SELECT "nation" FROM "table_203_61" ORDER BY "rank" NULLS FIRST LIMIT 1