19324
Moreover , the phases of CrB3 and CrB4 have been predicted by using a newly developed particle swarm optimization ( PSO ) algorithm .
 Chemical: CrB3; Chemical: CrB4
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: CrB3; Chemical: CrB4