9101
Finally , graphene oxide was reduced to graphene by further adding NaBH ( 4 ) .
 Chemical: graphene oxide; Chemical: graphene; Chemical: NaBH ( 4 )
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: graphene oxide, graphene, NaBH ( 4 ) 
Answer:
 Chemical: graphene oxide; Chemical: graphene; Chemical: NaBH ( 4 )