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.

Question: Is topical clobetasol in conjunction with topical tretinoin effective in preventing scar formation after superficial partial-thickness burn ulcers of the skin : A retrospective study?
Answer: Clobetasol+tretinoin can significantly decrease the incidence of scar formation in patients with inflammation after re-epithelialization of superficial wounds.
yes