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 identification of structural alert for liver and kidney toxicity using repeated dose toxicity data?
Answer: It was not possible to assign an unambiguous mode of action for all the SAs, but a mechanistic explanation is provided for some of them. Such achievements may help in the early identification of liver and renal toxicity of substances.
Example Output: yes

Example Input: Question: Does star-shaped tetraspermine enhance cellular uptake and cytotoxicity of T-oligo in prostate cancer cells?
Answer: SSTS significantly enhanced therapeutic benefits associated with the use of T-oligo and can be developed as a delivery vehicle for its in-vivo therapeutic applications.
Example Output: yes

Example Input: Question: Is the progesterone receptor PROGINS polymorphism related to oxidative stress factors in women with polycystic ovary syndrome?
Answer: No relation has been detected between the inflammatory and oxidative stress factors, and PROGINS polymorphism alleles. This may be because the PCOS patients are young and their BMI means are normal and their CIMT and oxidative stress markers are like healthy women.
Example Output:
no