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 the ribbon-associated protein C-terminal-binding protein 1 essential for the structure and function of retinal ribbon synapses?
Answer: Overall the results suggest that CtBP1 protein is not essential for the formation of functional ribbon synapses in the retina.
[EX A]: no

[EX Q]: Question: Do older men with higher self-rated socioeconomic status have shorter telomeres?
Answer: men with higher self-rated socioeconomic status have shorter telomeres, possibly mediated through psychosocial rather than lifestyle factors or the presence of chronic disease. There may be cultural ethnic and age-related differences in social determinants of health.
[EX A]: yes

[EX Q]: Question: Does low-level light therapy induce mucosal healing in a murine model of dextran-sodium-sulfate induced colitis?
Answer: Photobiostimulation with LLLT has a significant positive effect on disease progression in mice with DSS colitis.
[EX A]:
yes