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The quantity of capacitance and the rate at which it is delivered for four different MnOx - C variants was assessed by fabricating symmetric electrochemical capacitors using a concentrated aqueous electrolyte .
 Chemical: MnOx; Chemical: C
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: MnOx; Chemical: C