27141
We disclose a mixing effect caused by partial overlap of the highest occupied molecular orbital ( HOMO ) and lowest unoccupied molecular orbital ( LUMO ) of adsorbed gas molecules to explain graphene ' s ability to detect adsorbed molecules .
 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