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: Does pTEN loss in biopsy tissue predict poor clinical outcomes in prostate cancer?
Answer: PTEN loss at the time of biopsy seems to predict time to development of metastasis, prostate cancer-specific mortality and, for the first time, castration-resistant prostate cancer and response to androgen deprivation therapy after radical prostatectomy. If confirmed by larger studies, this would support the use of PTEN loss as an early marker of aggressive prostate cancer.
[EX A]: yes

[EX Q]: Question: Does alirocumab , a Therapeutic Human Antibody to PCSK9 , Affect CD81 Levels or Hepatitis C Virus Entry and Replication into Hepatocytes?
Answer: These results suggest that inhibition of PCSK9 with alirocumab has no effect on CD81 and does not result in increased susceptibility to HCV entry.
[EX A]: no

[EX Q]: Question: Is medullary neuronal loss associated with -synuclein burden in multiple system atrophy?
Answer: These findings indicate that in MSA adrenergic neurons are more susceptible than serotonergic neurons in the medulla. Further, loss of medullary monoaminergic neurons may progress independently from -synuclein accumulation in MSA. ©️ 2016 International Parkinson and Movement Disorder Society.
[EX A]:
no