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: Is pKCε a negative regulator of PVAT-derived vessel formation?
Answer: PKCε negatively interferes with vessel progenitor differentiation via interaction with PAK-1.
Example Output: yes

Example Input: Question: Do novel meta-analysis-derived type 2 diabetes risk loci determine prediabetic phenotypes?
Answer: In contrast to the first series of GWA-derived type 2 diabetes candidate SNPs, we could not detect reliable associations of the novel risk loci with prediabetic phenotypes. Possible weak effects of ADAMTS9 SNP rs4607103 and VEGFA SNP rs9472138 on insulin sensitivity and insulin secretion, respectively, await further confirmation by larger studies.
Example Output: no

Example Input: Question: Does brief fixation hamper the reliability of Ki67 analysis in breast cancer core-needle biopsies : a double-centre study?
Answer: Overall agreement for Ki67 expression was good between briefly fixed CNBs and conventionally fixed resection specimens, and within the range of studies comparing conventionally fixed CNBs and resections.
Example Output:
no