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.

Input: Consider Input: Question: Does intravenous insulin therapy during lung resection affect lung function or surfactant proteins?
Answer: According to our observations, short insulin treatment applied intravenously during resection does not affect the quality of breathing.

Output: no

Input: Consider Input: Question: Does dual tasking during postural stepping responses increase falls but not freezing in people with Parkinson 's disease?
Answer: For people with PD and FoG, forward falls may not always be caused by FoG, particularly under attention-distracting conditions.

Output: yes

Input: Consider Input: Question: Does increased production of soluble CTLA-4 in patients with spondylarthropathies correlate with disease activity?
Answer: SpA patients exhibit high levels of circulating sCTLA-4 that may result from an alternative splicing of CTLA-4 transcripts. This may influence immune activation and regulation in SpA.
Output: yes