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.

Example Input: Question: Does intravenous insulin therapy during lung resection affect lung function or surfactant proteins?
Answer: According to our observations, short insulin treatment applied intravenously during resection does not affect the quality of breathing.
Example Output: no

Example Input: Question: Is previous laparotomy a contraindication to laparoscopy-assisted gastrectomy for early gastric cancer?
Answer: There was no difference in outcome following LAG between the PSURG and NSURG groups in the present study. The PSURG patient is not contraindicated for LAG assuming careful attention is given for all operative procedures, including port insertion and dissection of intra-abdominal adhesions.
Example Output: no

Example Input: Question: Do azo pigments and quinacridones induce delayed hypersensitivity in red tattoos?
Answer: Azo pigments and quinacridones both triggered reactions with similar clinical aspects but with varying histological findings. Patch and prick test results were disappointing with both. Reactions occurred following laser use in 1 case.
Example Output:
yes