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Amy and Rory marry at the end of the fifth series and in the sixth series Amy gives birth to their daughter , Melody Pond , who is revealed to be recurring character River Song ( Alex Kingston ) .
 person: Alex Kingston
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: Alex Kingston 
Answer:
 person: Alex Kingston