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An alternative theory of centrally planned economies , the shortage economy theory of Hungarian economist János Kornai argues that it is not a failure of the pricing mechanism , but rather a systemic failure to produce enough goods , since shortages were obvious but persisted .
 person: János Kornai
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: János Kornai