Instructions: 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: Question: Is gene and Protein Expression of Chemokine ( C-C-Motif ) Ligand 19 Upregulated in Unstable Carotid Atherosclerotic Plaques?
Answer: CCL19 is significantly overexpressed in patients with unstable carotid atherosclerotic plaques and may be a possible novel biomarker for identifying high-risk patients in whom more urgent intervention may be indicated.
Output:
yes