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 recent unstable angina and off-pump coronary artery bypass grafting related to postoperative atrial fibrillation?
Answer: Post-CABG AF is associated with more complicated postoperative outcome. Recent unstable angina and off-pump procedure is not related to the occurrence of post-CABG AF.
[EX A]: no

[EX Q]: Question: Does patellar taping change the amplitude of electromyographic activity of the vasti in a stair stepping task?
Answer: The results of this study indicate that the positive clinical effects of medially directed therapeutic tape are not due to changes in EMG amplitude of the vasti muscle. Thus other effects such as changes in timing of contraction of the vasti are more likely candidates for the mechanism of efficacy.
[EX A]: no

[EX Q]: Question: Is [ Low expression of SLC22A1 associated with a poor prognosis of hepatocellular carcinoma : analysis of 303 patients ]?
Answer: Down-regulation of SLC22A1 is a malignant feature and a potential prognostic marker of HCC.
[EX A]:
yes