816
Edaravone , a free radical scavenger , has potent free radical quenching action and is used in clinical practice to treat cerebral infarction .
 Chemical: Edaravone; Disease: cerebral infarction
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: Edaravone; Disease: cerebral infarction