8508
Riemannian geometry generalizes Euclidean geometry to spaces that are not necessarily flat , although they still resemble the Euclidean space at each point infinitesimally , i.e. in the first order of approximation .
 person: Euclidean
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:
 person: Euclidean