14754
The safety and tolerability of ceftazidime - avibactam has been reported in three phase I pharmacokinetic studies and two phase II clinical studies .
 Chemical: ceftazidime; Chemical: avibactam
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: ceftazidime, avibactam 
Answer:
 Chemical: ceftazidime; Chemical: avibactam