26885
MATERIALS AND METHODS : Male Wistar rats were divided into five groups : control , group I ( treated with Realgar ) , group II ( treated with Realgar , Bovis Calculus Artificialis , Borneolum Synthcticum , Gypsum Fibrosum , Rhei Radix et Rhizoma , Scutellariae Radix , Platycodonis Radix and Glycyrrhizae Radix et Rhizoma ) , group III ( treated with Realgar , Bovis Calculus Artificialis , Borneolum Synthcticum and Gypsum Fibrosum ) and group IV ( treated with Realgar , Rhei Radix et Rhizoma , Scutellariae Radix , Platycodonis Radix and Glycyrrhizae Radix et Rhizoma ) .
 Chemical: Realgar; Chemical: Realgar; Chemical: Realgar; Chemical: Realgar
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, Realgar, Realgar, Realgar 
Answer:
 Chemical: Realgar; Chemical: Realgar; Chemical: Realgar; Chemical: Realgar