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The game 's level cap has been increased to level 60 ; and the expansion ( also called " Volume II " ) extends the Epic storyline by six more books , and adds two new classes , the Rune-keeper and the Warden .
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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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