3590
A toxic unit - based fiber LC50 value represented the DDT mixture ( DDT and DDD ) toxicity for both species .
 Chemical: DDT; Chemical: DDT; Chemical: DDD
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: DDT; Chemical: DDT; Chemical: DDD