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.

Example Input: Question: Do induction pegylated interferon alfa-2a and high dose ribavirin increase SVR in heavy patients with HCV genotype 1 and high viral loads?
Answer: In patients infected with HCV genotype 1 who are difficult to treat (high viral load, body weight ≥85 kg), a 12-week induction regimen of peginterferon alfa-2a and/or higher-dose ribavirin is not more effective than the standard regimen.
Example Output: no

Example Input: Question: Is transgene-induced gene silencing affected by a change in ploidy level?
Answer: Our results in A. thaliana indicated that there is no effect of ploidy level on transgene-induced post-transcriptional gene silencing. Our findings that post-transcriptional mechanisms were equally effective in diploids and tetraploids supports the use of transgene-driven post-transcriptional gene silencing as a useful mechanism to modify gene expression in polyploid species.
Example Output: no

Example Input: Question: Is insomnia associated with suicide attempt in middle-aged and older adults with depression?
Answer: Our results suggest that insomnia may be more strongly associated with suicidal behavior than with the presence of suicidal thoughts alone. Accordingly, insomnia is a potential treatment target for reducing suicide risk in middle-aged and older adults.
Example Output:
yes