16500
Plant consumption by grizzly bears reduces biomagnification of salmon - derived polychlorinated biphenyls , polybrominated diphenyl ethers , and organochlorine pesticides .
 Chemical: polychlorinated biphenyls; Chemical: polybrominated diphenyl ethers; Chemical: organochlorine
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: polychlorinated biphenyls, polybrominated diphenyl ethers, organochlorine 
Answer:
 Chemical: polychlorinated biphenyls; Chemical: polybrominated diphenyl ethers; Chemical: organochlorine