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Free b ( Welsh : Bws am ddim Free bus ) was a zero-fare shuttle bus that operated in Cardiff city centre , Wales .
 location: Cardiff; location: Wales
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: Cardiff, Wales 
Answer:
 location: Cardiff; location: Wales