24244
The designs included tobacco substitute sheet ( TSS ) containing glycerol , which dilutes toxicants in smoke , or the incorporation of blend - treated ( BT ) tobacco to reduce the levels of nitrogenous toxicant precursors and some polyphenols .
 Chemical: glycerol; Chemical: polyphenols
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: glycerol, polyphenols 
Answer:
 Chemical: glycerol; Chemical: polyphenols