28671
Transcription factors , such as the Liver X receptors ( LXRs ) , regulate both cholesterol and fatty acid metabolism in several tissues including the nervous system .
 Chemical: cholesterol; Chemical: fatty acid
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: cholesterol, fatty acid 
Answer:
 Chemical: cholesterol; Chemical: fatty acid