16894
A variety of photocrosslinking groups have been employed to prepare FPP analogs for use in such experiments including aryl azides , diazotrifluoropropionates and benzophenones .
 Chemical: FPP; Chemical: aryl azides; Chemical: diazotrifluoropropionates; Chemical: benzophenones
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: FPP, aryl azides, diazotrifluoropropionates, benzophenones 
Answer:
 Chemical: FPP; Chemical: aryl azides; Chemical: diazotrifluoropropionates; Chemical: benzophenones