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.

Example Input: Question: Does a novel biomechanical device improve gait pattern in patient with chronic nonspecific low back pain?
Answer: Patients with NSLBP treated with the novel biomechanical device for 3 months increased walking speed through longer step length and eliminated asymmetrical differences.
Example Output: yes

Example Input: Question: Does vitamin E supplementation alter physiological performance at fixed blood lactate concentrations in trained runners?
Answer: Daily VE supplementation for 35 days does not enhance or impair physiological performance at fixed blood lactate concentrations. Long-term VE supplementation for the purposes of performance enhancement is not recommended.
Example Output: no

Example Input: Question: Does pyridoxalated hemoglobin polyoxyethylene conjugate restore hypoxic pulmonary vasoconstriction in ovine sepsis?
Answer: Hypoxic pulmonary vasoconstriction is blunted during sepsis and there is no adaptation over time. It is not influenced by pyridoxalated hemoglobin polyoxyethylene conjugate. Pyridoxalated hemoglobin polyoxyethylene conjugate reversed hypotension and, with the exception of an increase in pulmonary arterial pressure, had no adverse effects on hemodynamics or oxygenation.
Example Output:
no