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 14-3-3η a novel mediator associated with the pathogenesis of rheumatoid arthritis and joint damage?
Answer: Extracellular 14-3-3η activates key signalling cascades and induces factors associated with the pathogenesis of RA at concentrations found in patients with RA, and its expression is higher in patients with radiographic damage and RA progression.
[EX A]: yes

[EX Q]: Question: Is eating disorder symptomatology associated with pregnancy and perinatal complications in a cohort of adolescents who were born preterm?
Answer: These results indicate that traumatic episodes early in life, including brain insults, do not appear to increase the susceptibility of developing eating disorder symptomatology, depression, deficiency of self-esteem, or distortion of body shape during late adolescence.
[EX A]: no

[EX Q]: Question: Is higher hospital volume associated with lower mortality in acute nonvariceal upper-GI hemorrhage?
Answer: The study was based on an administrative data set.
[EX A]:
yes