14578
Graphene is widely known for its anomalously strong broadband optical absorptivity of 2 . 3 % that enables seeing its single - atom layer with the naked eye .
 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