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: Do fat mass and obesity-associated gene polymorphisms affect metabolic response to hormone therapy in healthy postmenopausal women?
Answer: The presence of fat mass and obesity-associated gene risk variants in healthy early postmenopausal women does not adversely affect their response to hormone therapy.

Ex Output:
no


Ex Input:
Question: Is histamine released in acute thermal injury in human skin in vivo : a microdialysis study?
Answer: Histamine is not released in human skin during the acute phase of a thermal injury.

Ex Output:
no


Ex Input:
Question: Is cell-mediated cytotoxicity to porcine aortic endothelial cells dependent on galactosyl residues when baboon peripheral blood lymphocytes are previously primed with pig xenoantigens?
Answer: Galactosyl knockout pigs could solve hyperacute rejection and also prevent the activation of NK cells even after xenogeneic priming. T cells will then be the next hurdle for the success of xenografting.

Ex Output:

no