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.

Input: Consider Input: Question: Is congenital penile pathology associated with abnormal development of the dartos muscle : a prospective study of primary penile surgery at a tertiary referral center?
Answer: Congenital penile pathology (hypospadias, buried penis) is associated with structural anomalies in dartos tissue. Further research is needed to unveil the pathophysiology of the condition.

Output: yes


Input: Consider Input: Question: Does apelin-13 protect the heart against ischemia-reperfusion injury through the RISK-GSK-3β-mPTP pathway?
Answer: The protective mechanism of apelin-13 might be that inactivation of GSK-3β could inhibit the opening of mPTP by activating PI3K/Akt and ERK1/2 involved in the reperfusion injury salvage kinase (RISK) pathway.

Output: yes


Input: Consider Input: Question: Are outcomes after intravesical bacillus Calmette-Guerin affected by substaging of high grade T1 transitional cell carcinoma?
Answer: Substaging of T1 tumors did not affect response to BCG in regard to recurrence or progression. Therefore, intravesical BCG is effective for stages T1a and T1b disease.


Output: no