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Hallam FM sources say Doncaster striker Billy Sharp is undergoing a medical with Southampton ahead of a possible move . # hallamtransfers
 Hallam FM, Doncaster, Billy Sharp, Southampton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hallam FM, Doncaster, Billy Sharp, Southampton