3448
Filament formation and dissolution in the system Ag ( Cu ) / ZrO ( 2 ) / Pt were observed by Liu et al .
 Chemical: Ag ( Cu ); Chemical: ZrO ( 2 ); Chemical: Pt
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: Ag ( Cu ); Chemical: ZrO ( 2 ); Chemical: Pt