human
TASK: Your task is to answer biomedical questions using the given abstract. Only output yes, no, or maybe as answer.
INPUT: ['The hepatic perfusion index (HPI) is a ratio of the gradient of hepatic arterial to total hepatic blood flow. This study correlated HPI with histopathological indicators of prognosis and disease-free survival following curative resection of colorectal cancer.', 'HPI was measured preoperatively by dynamic hepatic scintigraphy in 37 patients with a primary colorectal cancer and no evidence of distant metastases who underwent a curative resection.', 'Abnormally elevated HPI were detected in 49% of patients and were significantly more frequent in association with locally advanced tumours (T3 and T4) in comparison with early tumours (T1 and T2; 59% vs 20%, respectively; P=0.04). There was no association between abnormal HPI and presence of lymph node metastases or degree of tumour differentiation. The 18-month disease-free survival rate of patients with abnormal HPI was significantly shorter than that of patients with normal HPI (53% vs 100%, respectively; P=0.01), and this was independent of the T category.'] Does abnormal hepatic perfusion index predict recurrence of colorectal carcinoma?
OUTPUT:

agent
yes
TASK: Your task is to answer biomedical questions using the given abstract. Only output yes, no, or maybe as answer.
INPUT: ['The hepatic perfusion index (HPI) is a ratio of the gradient of hepatic arterial to total hepatic blood flow. This study correlated HPI with histopathological indicators of prognosis and disease-free survival following curative resection of colorectal cancer.', 'HPI was measured preoperatively by dynamic hepatic scintigraphy in 37 patients with a primary colorectal cancer and no evidence of distant metastases who underwent a curative resection.', 'Abnormally elevated HPI were detected in 49% of patients and were significantly more frequent in association with locally advanced tumours (T3 and T4) in comparison with early tumours (T1 and T2; 59% vs 20%, respectively; P=0.04). There was no association between abnormal HPI and presence of lymph node metastases or degree of tumour differentiation. The 18-month disease-free survival rate of patients with abnormal HPI was significantly shorter than that of patients with normal HPI (53% vs 100%, respectively; P=0.01), and this was independent of the T category.'] Does abnormal hepatic perfusion index predict recurrence of colorectal carcinoma?
OUTPUT:
