18258
Low - temperature , solution - based self - assembly of vanadia nanofibers yields a free - standing , ceramic paper with an outstanding combination of high strength , stiffness , and macroscopic flexibility .
 Chemical: vanadia
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: vanadia