CREATE TABLE table_16139 ("Sepal length" TEXT, "Sepal width" TEXT, "Petal length" TEXT, "Petal width" TEXT, "Species" TEXT)

Name the sepal lengh when sepal width is 2.9 and petal width 1.3
SELECT "Sepal length" FROM table_16139 WHERE "Sepal width" = '2.9' AND "Petal width" = '1.3'
SELECT "Sepal length" FROM "table_16139" WHERE "Petal width" = '1.3' AND "Sepal width" = '2.9'