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.

Q: Question: Do clinical and radiological courses differ between fluid-attenuated inversion recovery-positive and negative patients with stroke after thrombolysis?
Answer: Visibility of lesions on FLAIR in areas of diffusion restriction was not predictive of the response to thrombolysis.

A: no
****
Q: Question: Do lactotripeptides lower ambulatory blood pressure in untreated whites : results from 2 controlled multicenter crossover studies?
Answer: The data do not support a BP-lowering effect of LTPs in whites.

A: no
****
Q: Question: Does a20 suppress hepatocellular carcinoma proliferation and metastasis through inhibition of Twist1 expression?
Answer: Our results demonstrate that A20 plays a negative role in the development and progression of HCC probably through inhibiting Twist1 expression. A20 may serve as a novel prognostic biomarker and potential therapeutic target for HCC patients.

A:
yes
****