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: Does statin therapy improve lung function in asthma : a meta-analysis of randomized controlled trials?
Answer: In conclusion, there is currently insufficient evidence to show that statins improve lung function in patients with asthma.
Example Output: no

Example Input: Question: Are synovial Cytokines and the MSIS Criteria Useful for Determining Infection Resolution After Periprosthetic Joint Infection Explantation?
Answer: IL-6 and IL-1β demonstrated high sensitivities to diagnose PJI and showed the greatest decrease between first and second stages, which may potentially be used to monitor treatment response to PJI. However, cytokines and MSIS criteria had low sensitivity to rule out infection before reimplantation.
Example Output: no

Example Input: Question: Does pre-treatment with prednisolone improve the efficacy of subsequent alpha interferon therapy in chronic hepatitis C?
Answer: Prednisolone administration and withdrawal induced a rebound in ALT activity and a decrease in HCV-RNA serum concentration in about one third of the patients with chronic hepatitis C. However, these changes did not enhance the effectiveness of subsequent alpha interferon therapy.
Example Output:
no