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 Q]: 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.
[EX A]: no

[EX Q]: Question: Does slower infusion of metoclopramide decrease the rate of akathisia?
Answer: Slower infusion of metoclopramide reduces the incidence of akathisia.
[EX A]: yes

[EX Q]: Question: Does cannabidiol fail to reverse hypothermia or locomotor suppression induced by Δ ( 9 ) -tetrahydrocannabinol in Sprague-Dawley rats?
Answer: There is no evidence from this study that elevated CBD content in cannabis could provide protection from the physiological effects of THC, in rats.
[EX A]:
yes