Q: 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: Is the PAI-1 4G/5G polymorphism associated with an increased risk of adverse pregnancy outcome in asymptomatic nulliparous women?
Answer: The PAI-1 4G polymorphism is not associated with an increase in the risk of serious adverse pregnancy events in asymptomatic nulliparous women.
A:
no