262034
For the 12-month period ending April 11 , 2009 , the airport had 31,638 aircraft operations , an average of 86 per day : 98 % general aviation and 2 % military .
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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:
 None