9103
Additionally , a trace amount of SnO ( 2 ) formed around active catalysts may also be beneficial to the enhancement of electrochemical activity .
 Chemical: SnO ( 2 )
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: SnO ( 2 )