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 endothelial cell chimerism influence allograft tolerance in liver transplant patients after withdrawal of immunosuppression?
Answer: Endothelial cell chimerism has nothing to do with the induction of clinical tolerance in liver transplant patients after withdrawal of immunosuppression.

Ex Output:
no

Ex Input:
Question: Is periodontitis an independent risk indicator for atherosclerotic cardiovascular diseases among 60 174 participants in a large dental school in the Netherlands?
Answer: This cross-sectional analysis of a large cohort in the Netherlands of 60174 participants shows the independent association of periodontitis with ACVD.

Ex Output:
yes

Ex Input:
Question: Does sevoflurane postconditioning improve long-term learning and memory of neonatal hypoxia-ischemia brain damage rats via the PI3K/Akt-mPTP pathway?
Answer: Sevoflurane postconditioning exerts a neuroprotective effect against HIBD in neonatal rats via PI3K/Akt/eNOS and PI3K/Akt/GSK-3 pathways, and blockage of mPTP opening may be involved in attenuation of histomorphological injury.

Ex Output:
yes