Instructions: 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.
Input: Question: Is cD100 up-regulation induced by interferon- on B cells related to hepatitis C virus infection?
Answer: Peripheral B cells show an activated phenotype during chronic HCV infection. Moreover, IFN- therapy facilitates the reversion of disrupted B cell homeostasis, and up-regulated expression of CD100 may be indirectly related to HCV clearance.
Output:
yes