3519
Oral procaterol 50 micrograms b . d . , procaterol 100 micrograms b . d . , and terbutaline 5 mg t . i . d . , were compared when given randomly in 1 - week treatment periods .
 Chemical: procaterol; Chemical: procaterol; Chemical: terbutaline
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: procaterol; Chemical: procaterol; Chemical: terbutaline