19042
The functionalized Si encapsulated by graphene sample exhibits a capacity of 2250 mAh g ( - 1 ) ( based on the total mass of graphene and Si ) at 0 . 1C and 1000 mAh g ( - 1 ) at 10C , and retains 85 % of its initial capacity even after 120 charge / discharge cycles .
 Chemical: Si; Chemical: graphene; Chemical: graphene; Chemical: Si
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: Si, graphene, graphene, Si 
Answer:
 Chemical: Si; Chemical: graphene; Chemical: graphene; Chemical: Si