10475
At two sampling sites , elevated levels of estrogenic activity up to 55 , 000 ng ethinylestradiol equivalents per kilogram sediment dry weight were detected in the respective sediment extracts .
 Chemical: ethinylestradiol
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: ethinylestradiol 
Answer:
 Chemical: ethinylestradiol