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 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.
Example Output: no

Example Input: Question: Does developmental changes in spatial distribution of in vivo fluorescence and epidermal UV absorbance over Quercus petraea leave?
Answer: The spatial pattern of epidermal UV-screen over the area of oak leaves is related to leaf anatomy during development. In vivo spectroscopy and fluorescence imaging of the leaf surface showed the distribution of pigments within the leaf and hence can provide a tool to monitor optically the leaf development in nature.
Example Output: yes

Example Input: Question: Does surgical approach affect perioperative respiratory morbidity in living donor nephrectomy : comparison between anterior subcostal incision and flank incision?
Answer: Living donor nephrectomy through either a flank incision or an anterior subcostal incision showed similar degrees of postoperative pain, decreased lung function, and pulmonary complications.
Example Output:
no