13600
Tissue accumulation and species - specific metabolism of technical pentabrominated diphenyl ether ( DE - 71 ) in two predator fish .
 Chemical: pentabrominated diphenyl ether; Chemical: DE - 71
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: pentabrominated diphenyl ether; Chemical: DE - 71