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: Is penile Doppler ultrasound in men with stuttering priapism and sickle cell disease -- a labile baseline diastolic velocity a characteristic finding?
Answer: Men with SP had a unique baseline Doppler ultrasound waveform, with a low PR waveform and an elevated, variable cavernosal artery velocity. We propose that this may be the sonographic manifestation of a reduced, fluctuating smooth muscle tone and that PDU may have a role for diagnosis and therapeutic monitoring of SP.
yes