IF petal_length > 2.45 AND
     IF petal_width_ > 1.75 AND
         IF petal_length > 4.85 THEN
             species = Iris-virginica
         IF petal_length <= 4.85 AND
             IF sepal_width > 3.1 THEN
                 species = Iris-versicolor
             IF sepal_width <= 3.1 THEN
                 species = Iris-virginica
     IF petal_width_ <= 1.75 AND
         IF petal_length > 4.95 AND
             IF petal_width_ > 1.55 AND
                 IF petal_length > 5.45 THEN
                     species = Iris-virginica
                 IF petal_length <= 5.45 THEN
                     species = Iris-versicolor
             IF petal_width_ <= 1.55 THEN
                 species = Iris-virginica
         IF petal_length <= 4.95 AND
             IF petal_width_ > 1.65 THEN
                 species = Iris-virginica
             IF petal_width_ <= 1.65 THEN
                 species = Iris-versicolor
 IF petal_length <= 2.45 THEN
     species = Iris-setosa