You will be given a definition of a task first, then some input of the task.
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 a haemoperitoneum indicate active bleeding in the peritoneum in 50 % of hypotensive blunt trauma patients : a study of 110 severe trauma patients?
Answer: Haemoperitoneum was associated with PAB in only 52% of hypotensive blunt trauma patients and 63% of bleeding patients. In contrast, 59% of bleeding patients had at least one EPAB. The screening of a haemoperitoneum as a marker of active haemorrhagic source may be confusing and lead to misdiagnosis and inappropriate strategy. Clinician should exclude carefully the presence of any EPAB explaining haemorrhagic shock, before to decide haemostatic treatment.
Output:
no