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: Do colony-stimulating factor-1 and its receptor have a role in the pathogenesis of uterine sarcomas?
Answer: In contradistinction to endometrial adenocarcinomas, in which CSF-1/CSF-1R is strongly correlated with tumor progression, CSF-1 and CSF-1R overexpression does not appear to play a role in the growth and differentiation of uterine sarcomas.
A:
no