318230
For example the equation has an acnode at the origin of \ mathbb ^ 2 , because it is equivalent to and x ^ 2 ( x-1 ) is non-negative when x ≥ 1 and when x = 0 .
 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