11525
The analysis reveals that spectral features of graphene on hBN are mainly affected by change in v ( F ) and mechanical strain but not by charge doping , unlike graphene supported on SiO 2 substrates .
 Chemical: graphene; Chemical: graphene; Chemical: SiO 2
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: SiO 2