CREATE TABLE table_16138 ("Sepal length" TEXT, "Sepal width" TEXT, "Petal length" TEXT, "Petal width" TEXT, "Species" TEXT)

Name the sepal width when sepal length is 6.5 and petal width is 2.2
SELECT "Sepal width" FROM table_16138 WHERE "Sepal length" = '6.5' AND "Petal width" = '2.2'
SELECT "Sepal width" FROM "table_16138" WHERE "Petal width" = '2.2' AND "Sepal length" = '6.5'