Given the task definition, example input & output, solve the new input case.
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: Question: Are group 2 innate lymphoid cells ( ILC2s ) increased in chronic rhinosinusitis with nasal polyps or eosinophilia?
Answer: As ILC2s are elevated in patients with CRSwNP, they may drive nasal polyp formation in CRS. ILC2s are also linked with high tissue and blood eosinophilia and have a potential role in the activation and survival of eosinophils during the Th2 immune response. The association of innate lymphoid cells in CRS provides insights into its pathogenesis.
Output: yes
The answer clearly says that ICLSs are elevated, which is exactly what the question asks. Hence, the output will be yes and it is correct.

New input case for you: Question: Do the periurethral glands significantly influence the serum prostate specific antigen concentration?
Answer: The greatest difference in median PSA levels that could be found between men with and without periurethral glands when using 3 different ultra-sensitive assays was 0.01 ng./ml., indicating that the periurethral glands do not have a clinically significant effect on serum PSA concentration after radical prostatectomy. Thus, a serum PSA level above the residual cancer detection limit following radical prostatectomy, even if obtained with a ultra-sensitive assay, reflects either malignant or benign residual prostatic tissue, rather than the presence of periurethral glands.
Output:
no