26295
Such polymer / graphene exhibits high conductivity and tunable surface property , as confirmed by the selected area electron diffraction and Raman and electrochemical impedance spectroscopy .
 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