9756
The picrate paper procedure detected no cyanide in the plant roots , but the reaction used for nitrate detection gave a strongly positive response .
 Chemical: cyanide; Chemical: nitrate
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: cyanide; Chemical: nitrate