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Vector calculus is initially defined for Euclidean 3-space , which has additional structure beyond simply being a 3-dimensional real vector space , namely : a norm ( giving a notion of length ) defined via an inner product ( the dot product ) , which in turn gives a notion of angle , and an orientation , which gives a notion of left-handed and right-handed .
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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