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.

Q: Question: Does pimecrolimus affect Langerhans cells in murine epidermis?
Answer: It is therefore unlikely that topically applied pimecrolimus affects epidermal LCs, in contrast to corticosteroids.

A: no
****
Q: Question: Do allergens of Epicoccum nigrum grown in different media for quality source material?
Answer: The day-13 culture of EN in SBY was the most potent and may be selected for preparing EN extracts for diagnosis of allergy and future studies.

A: yes
****
Q: Question: Is survival after pancreaticoduodenectomy improved by extending resections to achieve negative margins?
Answer: Survival after pancreaticoduodenectomy is not improved by extending pancreatic resections to achieve negative margins after initially positive intraoperative frozen sections. Tumor-specific factors beyond the presence of disease at a surgical margin are responsible for the abbreviated survival seen in patients undergoing R1 resections.

A:
no
****