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.

[EX Q]: Question: Are longer durations of antitumour necrosis factor treatment associated with reduced risk of cardiovascular events in patients with rheumatoid arthritis?
Answer: Anti-TNF therapy was associated with a significantly lower risk of cardiovascular events among patients with RA, older patients with RA and patients without prior exposure to methotrexate.
[EX A]: yes

[EX Q]: Question: Does overexpression of long noncoding RNA HOTAIR predict a poor prognosis in patients with cervical cancer?
Answer: our data indicate that high expression of HOTAIR is involved in cervical cancer progression and could be a potential target for diagnosis and gene therapy.
[EX A]: yes

[EX Q]: Question: Is fOXF1 transcription factor required for formation of embryonic vasculature by regulating VEGF signaling in endothelial cells?
Answer: FOXF1 is required for the formation of embryonic vasculature by regulating endothelial genes critical for vascular development and vascular endothelial growth factor signaling.
[EX A]:
yes