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.

Ex Input:
Question: Is visceral pleural invasion a significant prognostic factor in patients with a part-solid lung cancer?
Answer: VPI may not contribute to the prognosis of patients with part-solid nodules. Thus, upgrading of the TNM stage on the basis of VPI should be carefully considered in these patients.

Ex Output:
no

Ex Input:
Question: Does hepatic HMOX1 expression positively correlate with Bach-1 and miR-122 in patients with HCV mono and HIV/HCV coinfection?
Answer: HMOX1 and miR-122 play an important role in the pathogenesis of CHC in HCV mono-and HIV/HCV co-infected patients. Reduced expression of HMOX1 in patients with HIV/HCV co-infection may indicate a worse prognosis in this group. Our results do not support the importance of Bach-1 in repression of HMOX1 in patients with chronic hepatitis C.

Ex Output:
yes

Ex Input:
Question: Does active CREB1 promote a malignant TGF2 autocrine loop in glioblastoma?
Answer: TGF is considered a promising therapeutic target, and several clinical trials using TGF inhibitors are generating encouraging results. Here, we discerned the molecular mechanisms responsible for the aberrantly high levels of TGF2 found in certain tumors, and we propose biomarkers to predict the clinical response to anti-TGF therapies.

Ex Output:
yes