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: Are flexible magnets effective in decreasing pain perception and recovery time after muscle microinjury?
Answer: No significant therapeutic effects on pain control and muscular dysfunction were observed in subjects wearing flexible magnets.
Example Output: no

Example Input: Question: Do distinct resting-state perfusion patterns underlie psychomotor retardation in unipolar vs. bipolar depression?
Answer: The differences in rCBF and in the localization of the clusters of positive AL/rCBF correlations between BP and UP suggest that different neural impairments may underlie motor symptoms in the two disorders, but finally converge in phenotypically similar manifestations.
Example Output: yes

Example Input: Question: Does lack of Jun-N-terminal kinase 3 ( JNK3 ) protect against neurodegeneration induced by 3-nitropropionic acid?
Answer: Although JNK3 is a key protein involved in cell death in different neurodegenerative diseases, the present study demonstrates that the lack of JNK3 does not confer neuroprotection against 3-NP-induced neuronal death.
Example Output:
no