21857
SiCN : SiCN Nanofibers with a Diameter Below 100 nm Synthesized via Concerted Block Copolymer Formation , Microphase Separation , and Crosslinking ( Small 7 / 2013 ) .
 Chemical: SiCN; Chemical: SiCN
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: SiCN; Chemical: SiCN