You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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'.

A boy in a blue jacket rides a skateboard down the street. <sep> A blue jacketed boy is standing in football field.
Solution: yes
Why? This answer is yes because the boy can either be riding or standing but not both. Since the statements disagree, the answer is yes.

New input: Two young girls looking very concerned. <sep> Their faces convey their feelings.
Solution:
yes