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Gerardo Iván Contreras Gámez ( born January 29 , 1974 in Tampico ) is a Mexican professional volleyball player .
 person: Iván Contreras; location: Tampico; location: Mexican
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: Iván Contreras, Tampico, Mexican 
Answer:
 person: Iván Contreras; location: Tampico; location: Mexican