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: Do apolipoprotein E genotypes influence the age of onset in Huntington 's disease?
Answer: The ApoE genotype does not affect the course of HD significantly.
Example Output: no

Example Input: Question: Does apelin-13 protect the heart against ischemia-reperfusion injury through the RISK-GSK-3β-mPTP pathway?
Answer: The protective mechanism of apelin-13 might be that inactivation of GSK-3β could inhibit the opening of mPTP by activating PI3K/Akt and ERK1/2 involved in the reperfusion injury salvage kinase (RISK) pathway.
Example Output: yes

Example Input: Question: Do values of the bispectral index parallel the hemodynamic response to the rapid increase in isoflurane concentration?
Answer: BIS values decrease after a step increase in volatile agent concentration, whether or not a hyperdynamic action occurs.
Example Output:
no