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: Is time point important for effects of syngeneic bone marrow transplantation for type 1 diabetes in mice?
Answer: These results indicated that syn-BMT should be performed, when diabetes is neither too new-onset nor too late-stage. Tregs represent one mechanism for syn-BMT-induced restoration of immune tolerance in STZ-diabetic mice.
Example Output: yes

Example Input: Question: Are ovarian stem cells always accompanied by very small embryonic-like stem cells in adult mammalian ovary?
Answer: VSELs have remained poorly studied till now because of their very small size and rare occurrence. Spinning cells obtained after enzymatic digestion of ovarian tissue at a speed of 1000G (rather than 1200 rpm) throughout processing allows reliable detection of the VSELs by flow cytometry. VSELs exist in aged, chemoablated and non-functional ovary and providing a healthy niche to support their function offers an interesting strategy to manage infertility.
Example Output: yes

Example Input: Question: Are brain lesions most often reversible in acute thrombotic thrombocytopenic purpura?
Answer: Posterior reversible encephalopathy syndrome is the most common brain imaging abnormality in severe manifestations of thrombotic thrombocytopenic purpura. Large infarctions and hemorrhage are infrequent. Consequently, abnormal brain neuroimaging does not seem to impact patient outcome, and full neurologic recovery is possible even in comatose patients with extensive brain abnormalities on MRI.
Example Output:
yes