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'.

Example input: A boy in a blue jacket rides a skateboard down the street. <sep> A blue jacketed boy is standing in football field.
Example output: yes
Example explanation: This answer is yes because the boy can either be riding or standing but not both. Since the statements disagree, the answer is yes.
Q: a group of construction workers busy refinishing a subway station. <sep> A group of workers on their lunch break.
A:
yes