Given the task definition and input, reply with output. 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 pseudoaneurysm of head and neck vessels have been frequently observed in road side bomb blast victims?
Answer: Surgical intervention remains the management of choice for post-traumatic false aneurysms of head and neck in Pakistan. Despite the benefits of endovascular procedures, improvements must be weighed against the added costs on the patients.
yes