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 human Amnion-Derived Mesenchymal Stem Cell Transplantation ameliorate Liver Fibrosis in Rats?
Answer: Transplantation of hAMSCs provided significant improvement in a rat model of liver fibrosis, possibly through the inhibition of Kupffer cell and hepatic stellate cell activation. hAMSCs may be a potential new treatment for liver fibrosis.
Example Output: yes

Example Input: Question: Is terlipressin more effective in decreasing variceal pressure than portal pressure in cirrhotic patients?
Answer: Our results demonstrate that terlipressin produces significant and prolonged decreases in variceal pressure and variceal wall tension and has intrinsic effects on portal pressure and systemic hemodynamics. Variceal pressure provides a better assessment of the effects of terlipressin administration on esophageal varices than hepatic venous pressure gradient.
Example Output: yes

Example Input: Question: Does bradykinin mediate remote ischaemic preconditioning or ischaemia-reperfusion injury in vivo in man?
Answer: These findings do not support a major role for endogenous bradykinin, acting via the B(2) kinin receptor, in the mechanism of ischaemia-reperfusion injury or the protective effects of remote ischaemic preconditioning in man.
Example Output:
no