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: Do skin stretching for primary closure of acute burn wounds?
Answer: Skin Stretch for primary closure of acute burn wounds is a suitable technique and can be considered for specific circumscript full-thickness burn wounds. However, future research should be performed to provide additional scientific evidence.

Ex Output:
yes


Ex Input:
Question: Does patient-prosthesis mismatch in patients undergoing bioprosthetic aortic valve implantation increase risk of reoperation for structural valve deterioration?
Answer: Patients suffering from mismatch were twice as likely to undergo reoperation for aortic bioprosthesis replacement for SVD than those without mismatch.

Ex Output:
yes


Ex Input:
Question: Is the low level of glucagon-like peptide-1 ( glp-1 ) a risk factor of type 2 diabetes mellitus?
Answer: From this study it can be concluded that levels of intact GLP-1 are an important risk factor for T2DM in the Indonesian population.

Ex Output:

yes