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 Input:
Question: Are perioperative complications after hemiarthroplasty and total shoulder arthroplasty equivalent?
Answer: Multivariate analysis of patients undergoing TSA or HA in the NSQIP database suggests that patient factors-not the procedure being performed-are significant predictors of major complications. Controlling for patient comorbidities, we found no increased risk of perioperative major complications in patients undergoing TSA compared with HA.

Ex Output:
yes

Ex Input:
Question: Are higher maternal serum concentrations of nicotinamide and related metabolites in late pregnancy associated with a lower risk of offspring atopic eczema at age 12 months?
Answer: This is the first study linking maternal serum concentrations of nicotinamide and related metabolites to the risk of atopic eczema in the offspring. The findings point to potentially modifiable maternal influences on this complex and highly prevalent condition.

Ex Output:
yes

Ex Input:
Question: Do adolescents and young adults with type 1 diabetes display a high prevalence of endothelial dysfunction?
Answer: Adolescents with type 1 diabetes displayed evidence of endothelial dysfunction. Good metabolic control (glycated haemoglobin 7.5%, 58mmol/mol) and regular physical activity of at least 4h a week might be protective.

Ex Output:
yes