6671
The eigenvectors of " A " define the principal axes of the ellipsoid and the eigenvalues of " A " are the reciprocals of the squares of the semi-axes : , and .
 location: A; location: A
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: A; location: A