9842
Ascorbic acid , nitrate , and nitrite concentration relationship to the 24hour light / dark cycle for spinach grown in different conditions .
 Chemical: Ascorbic acid; Chemical: nitrate; Chemical: nitrite
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: Ascorbic acid, nitrate, nitrite 
Answer:
 Chemical: Ascorbic acid; Chemical: nitrate; Chemical: nitrite