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 helicobacter pylori infection in Mongolian gerbils initiate hematological diseases?
Answer: A single H. pylori infection is insufficient to cause onset of ITP or IDA and other factors may be required for disease onset.
Example Output: no

Example Input: Question: Does aerobic training alter CRP in apparently healthy , untrained men?
Answer: Regular aerobic training does not appear to affect CRP concentrations in apparently healthy, untrained men despite significant improvements in bodyweight, BF%, BMI, and VO2max.
Example Output: no

Example Input: Question: Is early polysensitization associated with allergic multimorbidity in PARIS birth cohort infants?
Answer: This study highlights, as early as 18months of age, three profiles of increasing severity with regard to allergic sensitization and diseases. These profiles also differ in terms of allergic morbidity at 6years. Early sensitization can predict allergic multimorbidity in childhood, and in the case of early polysensitization, multimorbidity is more frequent as soon as infancy.
Example Output:
yes