2020
Six EMs received 0 . 5 mg of terbutaline s . c . on two different occasions : 1 ) 1 hr after administration of a placebo and 2 ) 1 hr after 150 mg of metoprolol p . o .
 Chemical: terbutaline; Chemical: metoprolol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: terbutaline; Chemical: metoprolol