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Rayko Stoynov ( ) ( 1 October 1937 – 17 March 2010 ) was a Bulgarian international football player .
 person: Rayko Stoynov
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: Rayko Stoynov 
Answer:
 person: Rayko Stoynov