CREATE TABLE table_204_849 (id DECIMAL, "rank" DECIMAL, "name" TEXT, "nationality" TEXT, "time" TEXT)

who was the first runner to place from kenya ?
SELECT "name" FROM table_204_849 WHERE "nationality" = 'kenya' ORDER BY "rank" LIMIT 1
SELECT "name" FROM "table_204_849" WHERE "nationality" = 'kenya' ORDER BY "rank" NULLS FIRST LIMIT 1