28931
Aristolochic acid I ( AA - I ) , naturally occurring in Aristolochia plants , is a potent nephrotoxin and carcinogen .
 Chemical: Aristolochic acid I; Chemical: AA - I
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: Aristolochic acid I, AA - I 
Answer:
 Chemical: Aristolochic acid I; Chemical: AA - I