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Therefore , the measured values of stevioside and rebaudioside A contained in a sample vary according to the standard used for the quantification .
 Chemical: stevioside; Chemical: rebaudioside A
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: stevioside; Chemical: rebaudioside A