Q: 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.
Question: Does zuo Jin Wan reverse P-gp-mediated drug-resistance by inhibiting activation of the PI3K/Akt/NF-B pathway?
Answer: Our study has provided the first direct evidence that ZJW reverses drug-resistance in human colorectal cancer by blocking the PI3K/Akt/NF-B signaling pathway, and could be considered as a useful drug for cancer therapy.
A:
yes