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.

Ex Input:
Question: Is serum Reg-Ialpha suitable marker of metabolic syndrome?
Answer: Our study, for the first time, indicates that serum Reg-1alpha is not useful for the diagnosis of metabolic syndrome (Tab. 3, Ref. 7).

Ex Output:
no


Ex Input:
Question: Does growth hormone ( GH ) treatment restore endothelial function in children with GH deficiency?
Answer: These results indicate that endothelial function is impaired in children with GHD. GH therapy does not restore the impairment.

Ex Output:
no


Ex Input:
Question: Does serum Mac-2BP distinguish men with high grade , large volume prostate cancer from men with benign prostatic hyperplasia?
Answer: Serum Mac-2BP does not appear to originate in the prostate and it is unlikely that Mac-2BP can be used for the differential diagnosis of prostate cancer versus BPH.

Ex Output:

no