65210
The author further states that " the vector concept developed in two different ways : in a wide variety of physical applications , vector notation and techniques became , by the middle of this century , almost universal ; on the other hand , pure mathematicians reduced vector algebra to an axiomatic system , and introduced wide generalisations of the concept of a three-dimensional ' vector space ' . "
 None
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