29879
The use of silver nanoparticles ( Ag - NPs ) is rapidly increasing , but there are limited data on their effects on the aquatic environment .
 Chemical: silver; Chemical: Ag
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: silver; Chemical: Ag