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.

[Q]: Question: Does abrogation of early apoptosis alter late inhibition of hippocampal neurogenesis after irradiation?
Answer: Early apoptotic death of neural progenitors, endothelial cells, or both does not have a causative association with late inhibition of neurogenesis after irradiation.
[A]: no


[Q]: Question: Do norepinephrine and ephedrine counteract the increase in cutaneous microcirculation induced by spinal anaesthesia?
Answer: Improved skin perfusion induced by spinal anaesthesia was not counteracted by the use of norepinephrine or ephedrine.
[A]: no


[Q]: Question: Are there age-related changes in neural connectivity during the encoding of positive , but not negative , information?
Answer: These findings suggest that older adults' "positivity effect" may arise from age-related changes in the interactions between affect-processing regions and the hippocampus during the encoding of positive information.
[A]:
yes