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 classical swine fever virus induce oxidative stress in swine umbilical vein endothelial cells?
Answer: Our results indicated that CSFV infection induced oxidative stress in SUVECs. These findings provide novel information on the mechanism by which CSFV can alter intracellular events associated with the viral infection.

Ex Output:
yes


Ex Input:
Question: Does adenosine-activated myocardial ischemia induce delayed preconditioning?
Answer: Adenosine-induced ischemia does not exert a delayed protective effect in respect to cardiac bioelectrical and mechanical functions in patients with ischemic heart disease in the form of stable effort angina.

Ex Output:
no


Ex Input:
Question: Is eGFR expression associated with poor outcome in cutaneous squamous cell carcinoma?
Answer: We demonstrate that EGFR overexpression has prognostic implications associated with lymph node metastasis and progression in CSCC. This article is protected by copyright. All rights reserved.

Ex Output:

yes