4454
After intravenous administration of labetalol , metoprolol and midazolam the patient ' s condition improved , and 15 min later he woke up .
 Chemical: labetalol; Chemical: metoprolol; Chemical: midazolam
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: labetalol, metoprolol, midazolam 
Answer:
 Chemical: labetalol; Chemical: metoprolol; Chemical: midazolam