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 microvasculopathy observed in early or late endomyocardial biopsies related to angiographically confirmed transplanted heart coronary vasculopathy?
Answer: Microvasculopathy observed early or late after OHT was not related to angiographically confirmed CAV.
Example Output: no

Example Input: Question: Is early reduction in number of T cells producing proinflammatory cytokines , observed after extracorporeal photopheresis , linked to apoptosis induction?
Answer: Since proinflammatory cytokines play a major role in the pathology of GvHD, their down-regulation post-ECP may produce a direct clinical benefit. The lowest number of IL2-, IFNgamma- and TNFalpha-expressing T cells occurred within the apoptotic population; however, Annexin V-negative T cells also demonstrated a marked reduction post-ECP. However, the lack of an increase in IL4 and IL10 expression indicates that this process was not a consequence of skewing toward a Th2 cytokine profile.
Example Output: no

Example Input: Question: Is smoking history , and not depression , related to deficits in detection of happy and sad faces?
Answer: The results of this study provide preliminary evidence for distinctive cognitive decrements in smokers and individuals with depression.
Example Output:
yes