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Macroscopically , topological order is defined/described by robust ground state degeneracy and quantized non-Abelian geometric phase s of degenerate ground states , just like superfluid order is defined/described by vanishing viscosity and quantized vorticity .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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