instruction:
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:
Question: Is plasminogen activation by fibroblasts from periodontal ligament and gingiva directly affected by chemokines in vitro?
Answer: These results suggest that plasminogen activation by PDL and GF is not directly affected by the chemokines even in the presence of the inflammatory mediators TGF-beta and IL-1.
answer:
no


question:
Question: Is p53CM1 expression associated with prognosis in uterine cervical carcinoma?
Answer: The p53CM1 expression in cancer cells is not a predictive factor for the prognosis of patients with cervical carcinoma.
answer:
no


question:
Question: Do parmelia sulcata Taylor and Usnea filipendula Stirt induce apoptosis-like cell death and DNA damage in cancer cells?
Answer: In this study, methanolic extracts of Parmelia sulcata and Usnea filipendula induced apoptosis-like cell death by causing DNA damage, to cancer cells.
answer:

yes