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while holding that , from the view of ultimate truth ( " paramarthika satya " ) , all things ( including Buddha nature and Nirvana ) are empty of inherent existence ( svabhava ) , and that true enlightenment is this realization of emptiness .
 person: Buddha; person: Nirvana
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Buddha; person: Nirvana