3087
It was concluded that labetalol offers advantages over nitroprusside .
 Chemical: labetalol; Chemical: nitroprusside
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, nitroprusside 
Answer:
 Chemical: labetalol; Chemical: nitroprusside