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: Do transgenic mice with mammary gland targeted expression of human cortactin develop ( pre-malignant ) breast tumors : studies in MMTV-cortactin and MMTV-cortactin/-cyclin D1 bitransgenic mice?
Answer: From this study, we conclude that development of (pre-malignant) breast tumors in either wild type or MMTV-cyclin D1 mice was not augmented due to mammary gland targeted overexpression of human cortactin.
Output:
no