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: Does high expression of Cullin1 indicate poor prognosis for NSCLC patients?
Answer: These data suggested that Cullin1 might promote the progression of NSCLC and be a biotarget for NSCLC's therapy.

Ex Output:
yes

Ex Input:
Question: Is histamine released in acute thermal injury in human skin in vivo : a microdialysis study?
Answer: Histamine is not released in human skin during the acute phase of a thermal injury.

Ex Output:
no

Ex Input:
Question: Are cDKN2A ( p16 ) and HRAS frequently mutated in vulvar squamous cell carcinoma?
Answer: Somatic mutations were detected in 62% of VSCCs. As expected, HPV infection and TP53-mutations play a key role in the development of VSCC, but CDKN2A(p16), HRAS, and PIK3CA-mutations were also frequently seen in HPV-negative patients. Patients with somatic mutations, especially HRAS-mutations, have a significantly worse prognosis than patients lacking these changes, which could be of importance for the development of targeted therapy.

Ex Output:
yes