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Withaferin A , a triterpenoid component from Withania somnifera , counteracts malignancy , an effect attributed to stimulation of apoptosis .
 Chemical: Withaferin A; Chemical: triterpenoid
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: Withaferin A; Chemical: triterpenoid