5330
Unconjugated BPA did not appear to accumulate in pregnant ewes , and its concentration was similar in the newborns and their mothers ( 0 . 13 +/- 0 . 02 and 0 . 18 +/- 0 . 03 nmol / ml in cord and maternal blood , respectively ) .
 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 
Answer:
 Chemical: BPA