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Discovery Amateur astronomer Anthony Wesley discovered the impact at approximately 13:30 UTC on 19 July 2009 ( almost exactly 15 years after the Jupiter impact of comet Shoemaker-Levy 9 , or SL9 ) .
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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:  
Answer:
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