3163
Alternative copolymerization of a conjugated segment and a flexible segment and fabrication of a fluorescent sensing film for HCl in the vapor phase .
 Chemical: HCl
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: HCl 
Answer:
 Chemical: HCl