6498
Although the net result of such exchanges remains to be determined , it is likely that a significant part of the amino acids recovered from the alimentary proteins are used by the microbiota .
 Chemical: amino acids
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: amino acids 
Answer:
 Chemical: amino acids