20392
In screening for anti - EV71 candidates , we found that 7 - hydroxyisoflavone was active against EV71 .
 Chemical: 7 - hydroxyisoflavone
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 7 - hydroxyisoflavone