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Subsequent ILEI presidents have included István Szerdahelyi ( 1985 – 1988 ) , Edward Symoens ( 1988 – 1991 ) , Stefan MacGill ( 1991 – 1993 ) , Duncan Charters ( 1993 – 1998 ) , Mauro La Torre ( 1998 – 2003 ) , Radojica Petrovic ( 2003 – 2009 ) ; the current president is Stefan MacGill ( 2009 - ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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