29964
As a proof of concept , we generated a bionic ear via 3D printing of a cell - seeded hydrogel matrix in the anatomic geometry of a human ear , along with an intertwined conducting polymer consisting of infused silver nanoparticles .
 Chemical: silver
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