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 Q]: Question: Does vasopressin raise cardiac enzymes following cardiac surgery : a randomized double-blind clinical trial?
Answer: Vasopressin infusion has been used to treat catecholamine-unresponsive shock. In this study, intraoperative vasopressin was used safely as a possible first-line drug for treating hypotension; however, it did not increase the levels of cardiac enzymes after cardiac surgery.
[EX A]: no

[EX Q]: Question: Does the yeast histone chaperone hif1p function with RNA in nucleosome assembly?
Answer: These results suggest that specific RNA species may function in concert with histone chaperones to assemble chromatin.
[EX A]: yes

[EX Q]: Question: Does comparison of immunoglobulin G heavy-chain sequences in MS and SSPE brains reveal an antigen-driven response?
Answer: The presence of an antigen-driven response in MS, rather than a nonconventional mechanism of B-cell activation, warrants additional analysis of the specificity of IgG in MS brain and CSF.
[EX A]:
yes