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Classical mechanics For point masses Newton 's Law of Universal Gravitation states that there is a gravitational force between any two masses that is equal in magnitude for each mass , and is aligned to draw the two masses toward each other .
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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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