2540
After stopping the beta - agonist , and after a week with the atenolol , the arrhythmia disappeared .
 Chemical: atenolol; Disease: arrhythmia
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: atenolol; Disease: arrhythmia