3518
Procaterol , a new beta - 2 adrenoceptor stimulant , was studied in a double - blind , placebo - controlled , cross - over trial in patients with bronchial asthma .
 Chemical: Procaterol; Disease: bronchial asthma
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; Disease: bronchial asthma