Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: Do dehydroepiandrosterone and its sulfate predict the 5-year risk of coronary heart disease events in elderly men?
Answer: Low serum levels of DHEA and its sulfate predict an increased risk of CHD, but not CBD, events inelderly men.
Student:
yes