Instructions: 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: Question: Does early mobilisation in patients with acute deep vein thrombosis increase the risk of a symptomatic pulmonary embolism?
Answer: In acute DVT , early walking, thrombus location, and duration of the symptoms did not influence the incidence of symptomatic PE.
Output:
no