9408
Partial Least Squares Regression ( PLSR ) showed standard error of prediction ( SEP ) ~ 2 . 33 , 0 . 06 , 0 . 41 , 0 . 30 and 0 . 014 g / L for estimation of levels of adulteration with whey , synthetic milk , synthetic urine , urea and hydrogen peroxide , respectively .
 Chemical: urea; Chemical: hydrogen peroxide
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: urea; Chemical: hydrogen peroxide