18183
Molecular - scale control over the integration of disparate materials on graphene is a critical step in the development of graphene - based electronics and sensors .
 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