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.

Example Input: Question: Does alirocumab , a Therapeutic Human Antibody to PCSK9 , Affect CD81 Levels or Hepatitis C Virus Entry and Replication into Hepatocytes?
Answer: These results suggest that inhibition of PCSK9 with alirocumab has no effect on CD81 and does not result in increased susceptibility to HCV entry.
Example Output: no

Example Input: Question: Does phosphoinositide 3-kinase- regulate fungus-induced allergic lung inflammation through endoplasmic reticulum stress?
Answer: These findings suggest that PI3K- regulates Af-induced steroid-resistant eosinophilic allergic lung inflammation through ER stress.
Example Output: yes

Example Input: Question: Does bariatric surgery acutely change the expression of inflammatory and lipogenic genes in obese adipose tissue?
Answer: Bariatric surgery acutely changes the expression of inflammatory and lipogenic genes in adipose tissue. This information should be considered cautiously when designing studies to assess adipose tissue gene expression in morbidly obese patients. The same timing of sampling is mandatory.
Example Output:
yes