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 prooxidant-anti-oxidant balance associated with extent of coronary artery disease?
Answer: In conclusion, we found higher levels of oxidative stress in CAD+ patients compared to healthy subjects. The oxidation level was not related to measures of the extent of CAD such as number of stenosed vessels.
Example Output: no

Example Input: Question: Do delays in Referral and Enrolment Are Associated With Mitigated Benefits of Cardiac Rehabilitation After Coronary Artery Bypass Surgery?
Answer: Strategies for timely access to CR at each phase of the process are important given the negative impact that wait time has on key clinical outcomes. This is relevant because optimizing VO2peak and attendance to CR has been shown to confer a mortality advantage.
Example Output: yes

Example Input: Question: Are tGF-betaRII , BAX , IGFIIR , caspase-5 , hMSH3 and hMSH6 alterations associated with microsatellite instability or p53 mutations in invasive urothelial carcinoma of the urinary bladder?
Answer: We conclude that alterations of the examined target genes of MSI are rare in urinary bladder carcinoma and they are not associated with microsatellite instability or the presence of p53 mutations.
Example Output:
no