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.

Ex Input:
Question: Does transparent and open discussion of errors increase malpractice risk in trauma patients?
Answer: A transparent discussion of errors, complications, and deaths does not appear to lead to an increased risk of lawsuit.

Ex Output:
no

Ex Input:
Question: Does cheating explain selective differences at high and low relatedness in a social amoeba?
Answer: These results suggest that social competition and something beyond solitary growth differences occurs during the vegetative stage when amoebae eat bacteria and divide by binary fission. The high degree of repeatability of our results indicates that these effects are strong and points to the importance of new approaches to studying interactions in D. discoideum.

Ex Output:
no

Ex Input:
Question: Does complete calcification of colorectal liver metastases on imaging after chemotherapy indicate sterilization of disease?
Answer: This preliminary study shows that although imaging evidence of complete calcification of liver metastases may be a good indicator of chemotherapy response, it does not imply sterilization of the malignancy.

Ex Output:
no