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This space is only one example of a great variety of spaces in three dimensions called 3-manifold s. Details In mathematics , analytic geometry ( also called Cartesian geometry ) describes every point in three-dimensional space by means of three coordinates .
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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:
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