Afterward, the boys were told that their choices divided them into a Klee group and a Kandinsky group.
The boys knew from the beginning that no matter what choice they made, they wouldn't be divided. 
mnli hypothesis: The boys knew from the beginning that no matter what choice they made, they wouldn't be divided.  premise: Afterward, the boys were told that their choices divided them into a Klee group and a Kandinsky group.