26892
The effective material bases of toxicity alleviation to realgar ( As2S2 ) were Dahuang ( Rhei Radix et Rhizoma ) , Huangqin ( Scutellariae Radix ) , Jiegeng ( Platycodonis Radix ) and Gancao ( Glycyrrhizae Radix et Rhizoma ) , which regulated energy metabolism , choline metabolism , amino acid metabolism and gut flora disorder affected by realgar ( As2S2 ) exposure .
 Chemical: realgar; Chemical: As2S2; Chemical: choline; Chemical: amino acid; Chemical: realgar; Chemical: As2S2
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: realgar, As2S2, choline, amino acid, realgar, As2S2 
Answer:
 Chemical: realgar; Chemical: As2S2; Chemical: choline; Chemical: amino acid; Chemical: realgar; Chemical: As2S2