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 iCAM-1 deficiency suppress host allosensitization and rejection of MHC-disparate corneal transplants?
Answer: Prolonged survival seen in MHC-mismatched grafts in ICAM-1-/- mice, along with a suppressed DTH response to donor alloantigens after transplantation, suggest that ICAM-1 is associated with recipient sensitization to MHC alloantigens.
Example Output: yes

Example Input: Question: Is planimetry of aortic valve area using multiplane transoesophageal echocardiography a reliable method for assessing severity of aortic stenosis?
Answer: Planimetry of aortic valve area by TOE is difficult and less accurate than the continuity equation for assessing the severity of aortic stenosis.
Example Output: no

Example Input: Question: Is the endothelial nitric oxide synthase Glu298Asp polymorphism a risk factor for endometriosis in south Indian women?
Answer: In the present study we could neither observe a difference in the eNOS expression nor establish an association between the eNOS Glu298Asp exon 7 polymorphism in south Indian women with endometriosis.
Example Output:
no