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 c3 and C4 strongly related to adipose tissue variables and cardiovascular risk factors?
Answer: A strong relation between C3, C4 and C3a-desArg levels, adipose tissue and risk factors of CVD was established. The data support that the adipose tissue produces complement components and generates initiators of inflammation, such as C3a and C5a, able to trigger a cyto/chemokine response, in proportion to the amount of adipose tissue. This corroborates the concept that complement contributes to the low-grade inflammation associated with obesity.

Ex Output:
yes

Ex Input:
Question: Do induction pegylated interferon alfa-2a and high dose ribavirin increase SVR in heavy patients with HCV genotype 1 and high viral loads?
Answer: In patients infected with HCV genotype 1 who are difficult to treat (high viral load, body weight 85 kg), a 12-week induction regimen of peginterferon alfa-2a and/or higher-dose ribavirin is not more effective than the standard regimen.

Ex Output:
no

Ex Input:
Question: Is tracheostomy a risk factor for deep sternal wound infection after cardiac surgery?
Answer: The incidence of DSWI remains high in patients with respiratory failure. Tracheostomy is not a risk factor for DSWI and serves as a surrogate for respiratory failure. Therefore, considering that early tracheostomy may be beneficial in patients with respiratory insufficiency, a more liberal approach to early tracheostomy may be warranted.

Ex Output:
no