25949
Low levels of BPA can be detected in over 90 % of human urine samples in the US , indicating that exposure to BPA is widespread .
 Chemical: BPA; Chemical: BPA
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: BPA, BPA 
Answer:
 Chemical: BPA; Chemical: BPA