Given Sentence 1 and Sentence 2, indicate your answer as yes when the two sentences clearly agree or clearly disagree with each other. If the relationship cannot be determined, answer with 'no'.

Input: Consider Input: A man smiles while he shaves the head of another man. <sep> A guy is cutting another man's hair.

Output: yes


Input: Consider Input: A policeman on a motorcycle from the rear. <sep> An officer on a chopper.

Output: yes


Input: Consider Input: Two young girls looking very concerned. <sep> Their faces convey their feelings.


Output: yes