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Dallas Neal Trahern ( born November 29 , 1985 ) is a professional baseball pitcher , who is currently a free agent .
 person: Dallas; person: Trahern
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: Dallas, Trahern 
Answer:
 person: Dallas; person: Trahern