Task: Text Categorization
Input (English): Question: P. L. is a patient with frequent urinary infections. When explaining the possible causes of the same will comment that a risk factor is: 
 Options:  <0> The presence of urinary stones. <1> The intake of substances that acidify the urine. <2> The increase of leukocytes in urine. <3> The saturation of urine by calcium salts. <4> The emission of urine every 2 or 3 hours.
Output (English): nursery