The conversation between human and AI assistant.
[|Human|] Divide the number 20 into two parts such that the sum of the two parts is 16
[|AI|] I'm sorry, but your instruction seems to contain an error. It is not possible to divide a number into two parts and have the sum of those two parts be less than the original number. Can you clarify or rephrase your instruction?
[|Human|] 
Divide the number 20 into two parts such that the sum of the two parts is 16