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 Q]: 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 A]: no

[EX Q]: Question: Is epidural analgesia superior to local infiltration analgesia in children with cerebral palsy undergoing unilateral hip reconstruction?
Answer: Epidural analgesia is superior to local infiltration analgesia for early postoperative pain management in children with cerebral palsy who undergo unilateral hip reconstruction.
[EX A]: yes

[EX Q]: Question: Is digital rectal examination in primary care important for early detection of prostate cancer : a retrospective cohort analysis study?
Answer: DRE is a key part of the assessment for prostate cancer. It can independently identify patients at risk of prostate cancer, with a substantial proportion of these having clinically significant disease requiring treatment. This study reinforces the importance of DRE in the primary care setting in the assessment for prostate cancer. An abnormal DRE, even in the setting of a normal PSA level, necessitates referral.
[EX A]:
yes