8755
The class structures of original samples can be characterized and deformed by local metrics of the semi-Riemannian space .
 local metrics of the semi-Riemannian space, class structures
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 local metrics of the semi-Riemannian space, class structures