5168
Effects - based marine ecological risk assessment at a polychlorinated biphenyl - contaminated site in Saglek , Labrador , Canada .
 Chemical: polychlorinated biphenyl
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: polychlorinated biphenyl