10991
Diets contained 2 . 5 to 20 % Hudson River fish , providing 0 . 72 to 6 . 1 micro g Sigma PCBs / g feed ( 4 . 8 - 38 pg toxic equivalents [ TEQWHO 2005 ] / g feed ) .
 Chemical: PCBs
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: PCBs