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.

Example Input: Question: Does sympathetic nerve activity reduce proprioceptive acuity in humans?
Answer: The present findings contradict previous reports from animal studies and the hypothesis that sympathetic nerve activity reduces proprioceptive acuity.
Example Output: no

Example Input: Question: Do natural triterpenic diols promote apoptosis in astrocytoma cells through ROS-mediated mitochondrial depolarization and JNK activation?
Answer: Overall, we provide a significant insight into the anticarcinogenic action of erythrodiol and uvaol that may have a potential in prevention and treatment of brain tumors and other cancers.
Example Output: yes

Example Input: Question: Does blockade of CD40-CD154 at the time of donor-specific blood transfusion lead to prolonged kidney allograft survival in nonhuman primates?
Answer: DST under the cover of relatively high levels of anti-CD154 failed to result in prolonged graft survival or prevent the formation of antidonor antibodies, when cyclosporine was given after transplantation.
Example Output:
no