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.

Ex Input:
Question: Does bisphenol A increase atherosclerosis in pregnane X receptor-humanized ApoE deficient mice?
Answer: These findings identify a molecular mechanism that could link BPA exposure to increased risk of CVD in exposed individuals. PXR is therefore a relevant target for future risk assessment of BPA and related environmental chemicals in humans.

Ex Output:
yes


Ex Input:
Question: Is p53CM1 expression associated with prognosis in uterine cervical carcinoma?
Answer: The p53CM1 expression in cancer cells is not a predictive factor for the prognosis of patients with cervical carcinoma.

Ex Output:
no


Ex Input:
Question: Does effect of AST on age-associated changes of vocal fold in a rat model?
Answer: These results suggest that AST has the potential to attenuate age-associated changes of vocal folds.

Ex Output:

yes