4970
Exposure to pyrene from an oil spill may reduce the standing stock of Calanus , which can lead to less energy available to higher trophic levels in the Arctic marine food web .
 Chemical: pyrene
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: pyrene