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.

Input: Consider Input: Question: Are anticytomegalovirus antibody titres associated with caregiving burden in younger caregivers?
Answer: These data suggest that in the absence of immunosenescence, the chronic stress of caregiving is not sufficient to compromise the immune response to persistent CMV infection. However, an indirect mechanism to poorer health in caregivers might be via adoption of disadvantageous health behaviours in response to stress. Statement of contribution What is already known on this subject? Older caregivers of spouses with dementia show a poorer immune response against latent viruses when compared to age- and sex-matched controls. Younger parental caregivers of children with developmental disabilities show a poorer antibody response to vaccination. What does this study add? The study showed no association between caregiving stress and CMV antibody titre in young caregivers. There were higher CMV antibody titres in the caregivers who engage in unhealthy behaviours.

Output: no


Input: Consider Input: 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.

Output: no


Input: Consider Input: Question: Does loss of Frzb and Sfrp1 differentially affect joint homeostasis in instability-induced osteoarthritis?
Answer: Using the DMM model, we demonstrated that FRZB and SFRP1 differentially modulate joint homeostasis in two distinct compartments of the joint. These data highlight the fine-tuning of Wnt signaling in joint homeostasis and disease, show differential regulation of the cascade in cartilage and subchondral bone, and provide further evidence for a role of endogenous Wnt modulators as key players in OA.


Output: yes