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 Q]: Question: Does constitutive secretion of Interleukin-4 dictate CD133+ side population cells to resist drug treatment and cell death?
Answer: Our data suggest that the autocrine secretion of IL-4 is a potential target for the development of novel anticancer drugs to prevent the CSCs-mediated therapy failure and tumorigenesis.
[EX A]: yes

[EX Q]: Question: Is an Ile93Met substitution in the UCH-L1 gene a disease-causing mutation for idiopathic Parkinson 's disease?
Answer: Our study suggested that Ile93Met of UCH-L1 gene did not influence risk of IPD.
[EX A]: no

[EX Q]: Question: Does [ Prevalence of anxiety disturb in patients with Tourette syndrome and tic disturb ]?
Answer: Anxiety disorders seem to be linked with the variables of patients'age, duration of disease, gender, pharmacological treatment and presence of comorbidity for obsessive-compulsion disorder (OCD).
[EX A]:
yes