5460
Conclusion : About 20 % of the salivary glands were dysfunctional on SGS 5 years after a single RAI ablation , especially in patients who received higher doses of RAI .
 Chemical: RAI; Chemical: RAI
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: RAI, RAI 
Answer:
 Chemical: RAI; Chemical: RAI