4154
It is concluded that L - dopa enhances reflex bradycardia through central alpha - receptor stimulation .
 Chemical: L - dopa; Disease: bradycardia
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: L - dopa, bradycardia 
Answer:
 Chemical: L - dopa; Disease: bradycardia