1211
They were classified into three classes : dual Aurora - A and Aurora - B inhibitors , selective inhibitors of Aurora - A and selective inhibitors of Aurora - B by Self - Organizing Map ( SOM ) and Support Vector Machine ( SVM ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None