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He started the following season , 2009 – 10 , at Luton before returning to Grays Athletic on 17 August , where he made six appearances in a four-month loan spell .
 organization: Luton; organization: Grays Athletic
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: Luton, Grays Athletic 
Answer:
 organization: Luton; organization: Grays Athletic