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.

Example Input: Question: Does a protein complex containing Inscuteable and the Galpha-binding protein Pins orient asymmetric cell divisions in Drosophila?
Answer: Pins and Inscuteable are dependent on each other for asymmetric localisation in delaminated neuroblasts. The binding of Pins to Galpha protein offers the intriguing possibility that Inscuteable and Pins might orient asymmetric cell divisions by localising or locally modulating a heterotrimeric G-protein signalling cascade at the apical cell cortex.
Example Output: yes

Example Input: Question: Is cytoplasmic expression of -catenin an independent predictor of progression of conventional renal cell carcinoma : a simple immunostaining score?
Answer: Cytoplasmic -catenin expression is an independent prognostic factor for conventional RCC, and may help to identify patients with a high risk of cancer-specific death and to direct optimized active surveillance or adjuvant therapy.
Example Output: yes

Example Input: Question: Does screening women with a family history of breast cancer -- result from the British Familial Breast Cancer Group?
Answer: This study provides evidence to suggest that screening young women with a significant family history of breast cancer is effective and that a survival benefit can be expected. As a result the British Familial Breast Cancer Group proposes a co-ordinated prospective observational study.
Example Output:
yes