18145
Permethrin caused 50 % lethality in C . dilutus at 1 . 83 +/- 1 . 13 micro g / g organic carbon ( OC ) and 1 . 20 +/- 0 . 55 micro g / g OC after exposures of 20 d ( before pupation ) and 58 d ( the end of the testing ) , respectively .
 Chemical: Permethrin; Chemical: carbon
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: Permethrin, carbon 
Answer:
 Chemical: Permethrin; Chemical: carbon