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We can see Algorithmic Game Theory from two perspectives : The field was started when Nisan and Ronen in STOC '99 drew the attention of the Theoretical Computer Science community to designing algorithms for selfish ( strategic ) users .
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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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