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 creatine supplementation affect kidney function in an animal model with pre-existing renal failure?
Answer: Creatine supplementation at a dosage of 2% w/w for 4 weeks does not impair kidney function in animals with pre-existing renal failure or in control animals.
Example Output: no

Example Input: Question: Do several mechanical manipulations of the wall of the inner ear affect air and bone conduction auditory thresholds?
Answer: It is likely that an alternative mode of cochlear excitation is possible.
Example Output: no

Example Input: Question: Does serotonin enhance platelet procoagulant properties and their activation induced during platelet tissue factor uptake?
Answer: Serotonin enhances the interaction of platelets with TF-MVs, increases platelet activation, and potentiates their overall procoagulant activity. The present results could have significant implications in thrombus formation and in the thrombogenic profile of pathological situations with increased cardiovascular risk.
Example Output:
yes