16443
Root DDE content was unaffected by the presence of fullerenes and decreased by 21 . 6 to 37 . 5 % during coexposure with earthworms .
 Chemical: DDE; Chemical: fullerenes
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: DDE, fullerenes 
Answer:
 Chemical: DDE; Chemical: fullerenes