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Bulgaria In 2006 , PFC Levski Sofia president Todor Batkov felt it acceptable to call referee Mike Riley a " British homosexual " , following Riley 's controversial sending off of Cedric Bardon during the UEFA Cup quarterfinal game against Schalke 04 .
 PFC Levski Sofia, Todor Batkov, Mike Riley, Riley, Cedric Bardon, Schalke 04
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 PFC Levski Sofia, Todor Batkov, Mike Riley, Riley, Cedric Bardon, Schalke 04