Assertion: sea urchin | /r/HasProperty | six to twelve centimeters
Facets:
value: in shape
type: OTHER
value: in spherical
type: OTHER
value: in length
type: OTHER
value: typically
type: DEGREE
Source sentences:
text: Sea urchins are typically six to twelve centimeters in length and spherical in shape, although flattening can occur along the oral-arboral axis.