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 frailty predict major bleeding within 30days in elderly patients with Acute Coronary Syndrome?
Answer: Frailty phenotype, as a marker of biological vulnerability, is an independent predictor of major bleeding in elderly patients with ACS. Frailty can play an important role in bleeding risk stratification and objective indices should be integrated into routine initial evaluation of these patients.

Ex Output:
yes

Ex Input:
Question: Is cardiac autonomic neuropathy in patients with uraemia related to pre-diabetes?
Answer: The prevalence of CAN and impaired glucose tolerance is high in uraemic patients, but impaired glucose tolerance seems to play no significant role in the aetiology of CAN in uraemic patients.

Ex Output:
no

Ex Input:
Question: Does infusion of human embryonic kidney cell line conditioned medium reverse kainic acid induced hippocampal damage in mice?
Answer: Our present data demonstrate for the first time that infusion of HEK cells/HEK-CM can prevent excitotoxic hippocampal damage and alleviate consequent behavioral abnormalities.

Ex Output:
yes