data work.iris;
input Sepal Length   Sepal Width   Petal Length   Petal Width   Species   Index
;
datalines;  
5.1,3.5,1.4,0.2,setosa,1
4.9,3.0,1.4,0.2,setosa,2
4.7,3.2,1.3,0.2,setosa,3
4.6,3.1,1.5,0.2,setosa,4
5.0,3.6,1.4,0.2,setosa,5
run;