21921
The oxygen radical absorbance capacity ( ORAC ) of TM - P2 was 2100 . 44 mu mol Trolox / g .
 Chemical: oxygen; Chemical: Trolox
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: oxygen, Trolox 
Answer:
 Chemical: oxygen; Chemical: Trolox