20144
We report the facile one - pot single - phase syntheses of silver nanoparticles stabilized by norbornene type cationic polymers .
 Chemical: silver; Chemical: norbornene
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: silver, norbornene 
Answer:
 Chemical: silver; Chemical: norbornene