21864
Graphene in Light : Design , Synthesis and Applications of Photo - active Graphene and Graphene - Like Materials .
 Chemical: Graphene; Chemical: Graphene; Chemical: Graphene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Graphene; Chemical: Graphene; Chemical: Graphene