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 interleukin-6 stimulate rat myometrial contractions in an in vitro model?
Answer: IL-6 in the presence or absence of membranes, over a four log fold dose range, did not stimulate uterine contractions.

Ex Output:
no


Ex Input:
Question: Does long-term treadmill exercise attenuate tau pathology in P301S tau transgenic mice?
Answer: Our results suggest that forced treadmill exercise differently affects the brain and spinal cord of aged P301S tau mice, with greater benefits observed in the spinal cord versus the brain. Our work adds to the growing body of evidence that exercise is beneficial in tauopathy, however these benefits may be more limited at later stages of disease.

Ex Output:
yes


Ex Input:
Question: Does helicobacter pylori eradication influence gastroesophageal reflux disease : a prospective , parallel , randomized , open-label , controlled trial?
Answer: Manometric, clinical and endoscopic data showed no benefit in eradicating H. pylori in GERD. Our data supports the hypothesis that H. pylori eradication does not influence GERD.

Ex Output:

no