16931
Brominated diphenyl ether - 209 was the dominant congener , accounting for 87 % of sum 8 PBDE .
 Chemical: Brominated diphenyl ether - 209; Chemical: PBDE
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Brominated diphenyl ether - 209; Chemical: PBDE