Detailed Instructions: 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.
Problem:Question: Does adenovirus-mediated overexpression of human tissue plasminogen activator prevent peritoneal adhesion formation/reformation in rats?
Answer: Administration of adenovector encoding htPA is safe and decreased de novo and recurrent peritoneal adhesions.
Solution:
yes