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Steve is portrayed as brash and overly self-confident , and often plays pranks on Clark Kent , which he is usually able to counter with the subtle usage of his powers ( referring to him by the unflattering nickname " Clarkie " ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None