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 overexpression of long noncoding RNA HOTAIR predict a poor prognosis in patients with cervical cancer?
Answer: our data indicate that high expression of HOTAIR is involved in cervical cancer progression and could be a potential target for diagnosis and gene therapy.

Ex Output:
yes


Ex Input:
Question: Do xenon and nitrous oxide depress cardiac function in an isolated rat heart model?
Answer: Our data suggest that cardiac contractility was decreased by the effects of reduced O2 delivery, but both Xe and N2O did not cause further cardiac depressant effects compared to N2 in this experimental model.

Ex Output:
no


Ex Input:
Question: Do cystic fibrosis heterozygotes have increased platelet activation?
Answer: The 50% reduction in the CF transmembrane conductance regulator protein in heterozygotes is insufficient to cause platelet activation.

Ex Output:

no