Given the task definition and input, reply with output. 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: Are prepregnancy body mass index and prenatal fasting glucose effective predictors of early postpartum metabolic syndrome in Spanish mothers with gestational diabetes?
Answer: Women having GDM are at threat of early postpartum metabolic syndrome. This risk can be easily identified by assessing prepregnancy BMI and antenatal fasting glycemia in the first pregnancy visit.
yes