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He joined Ayr United in August 1999 , and remained with them until August 2000 .
 organization: Ayr United
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: Ayr United 
Answer:
 organization: Ayr United