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One of the reasons for focusing on this as the main energy supply of the Sustainocene is that more solar energy strikes the Earth 's surface in one hour of each day than the energy used by all human activities in one year .
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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:
 None