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In the standard Lambda-CDM model of cosmology , the total mass–energy of the universe contains 5 % ordinary matter and energy , 27 % dark matter and 68 % of a form of energy known as dark energy .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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