14235
RESULTS : For neonates and young infants less than 2 months of age , the median central clearance was 0 . 133 and 0 . 149 L / h / kg for piperacillin and tazobactam , respectively .
 Chemical: piperacillin; Chemical: tazobactam
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: piperacillin, tazobactam 
Answer:
 Chemical: piperacillin; Chemical: tazobactam