12556
Polymer supported dichlorophosphate ( PEG - OPOCl ( 2 ) ) is an efficient green catalyst for the electrophilic substitution reaction of indole with aromatic aldehydes , in neat condition , to afford an excellent yield of bis ( indolyl ) methanes with short reaction time , at room temperature .
 Chemical: dichlorophosphate; Chemical: PEG - OPOCl ( 2 ); Chemical: indole; Chemical: aromatic aldehydes; Chemical: bis ( indolyl ) methanes
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: dichlorophosphate, PEG - OPOCl ( 2 ), indole, aromatic aldehydes, bis ( indolyl ) methanes 
Answer:
 Chemical: dichlorophosphate; Chemical: PEG - OPOCl ( 2 ); Chemical: indole; Chemical: aromatic aldehydes; Chemical: bis ( indolyl ) methanes