5710
In two experiments , rainbow trout were injected intraperitoneally with 0 , 10 , or 100 mg / kg of naphthenic acids , and sampled after 5 or 21 d .
 Chemical: naphthenic acids
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: naphthenic acids 
Answer:
 Chemical: naphthenic acids