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.
Q: Question: Does contractile reserve induced with dobutamine echocardiography predict outcome in patients with left ventricular dysfunction and mitral regurgitation?
Answer: In patients with advanced LVD and severe MR, CR detected by DSE was associated with significant reductions in the risk of death and heart transplantation.
A:
yes