29662
We attribute this behavior to the high surface conformation enabled by the low bending rigidity and strong adhesion of few layer graphene .
 Chemical: graphene
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 
Answer:
 Chemical: graphene