Instructions: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Input: Question: Does physical exercise alleviate ER stress in obese humans through reduction in the expression and release of GRP78 chaperone?
Answer: Our results suggest that physical exercise alleviates ER stress in human obese through attenuation of GRP78 signaling network.
Output:
yes