Assertion: spondylolisthesis | /r/HasProperty | classified into grade
Facets:
value: further
type: MANNER
Source sentences:
text: Spondylolisthesis is further classified into grades, according to how far out of place the vertebra is.
text: Spondylolisthesis has been classified into grades I, II, III, IV and V depending on the severity of the displacement of the vertebra above on the vertebra below.