16605
These nanoparticles were polycrystalline and crystallized into a hexagonal structure , which is unusual for GdF3 .
 Chemical: GdF3
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: GdF3 
Answer:
 Chemical: GdF3