Instructions: 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.
Input: Question: Is birth weight related to risk of diabetic retinopathy in type 2 diabetes : the Atherosclerosis Risk in Communities Study?
Answer: Birth weight was not associated with diabetic retinopathy.
Output:
no