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How it works Using an online media platform , On Day One is designed to gather and share ideas about what the next president can do on the first day of his or her administration to help address the world 's most pressing challenges .
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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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