Definition: 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.
Input: Question: Is previous wide local excision of primary melanoma a contraindication for sentinel lymph node biopsy of the trunk and extremity?
Answer: SLNB is feasible in patients with previous WLE for extremity and truncal melanoma. Similar rates of sentinel positivity are found when compared with those in whom their WLE was done concurrently.
Output:
no