You will be given a definition of a task first, then some input of the task.
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.

Question: Does soluble CD40 ligand induce human coronary artery smooth muscle cells proliferation and migration?
Answer: This study suggests that sCD40L increases VSMC proliferation and migration through the MMP-9 pathway, which may be a potential mechanism through which sCD40L induces intimal hyperplasia and atherosclerosis.
Output:
yes