3582
Assessing bioavailability and toxicity of permethrin and DDT in sediment using matrix solid phase microextraction .
 Chemical: permethrin; Chemical: DDT
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: permethrin; Chemical: DDT