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The kobs value was proportional to the concentration of catalyst 1 or 2 , whereas the kobs value remained constant irrespective of the concentration of CF3COOH or O2 .
 Chemical: CF3COOH; Chemical: O2
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: CF3COOH, O2 
Answer:
 Chemical: CF3COOH; Chemical: O2