1291
The alignment of barium ferrite nanoparticles from their suspensions in electric and magnetic fields .
 Chemical: barium ferrite
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: barium ferrite 
Answer:
 Chemical: barium ferrite