Assertion: sand dollar's spine | /r/CapableOf | give the name
Facets:
Source sentences:
text: They have a rigid, usually spherical body bearing moveable spines, which gives the class the name Echinoidea (from the Greek ekhinos, spine).
text: They have a rigid, usually spherical body bearing moveable spines, which gives the class the name Echinoidea (from the Greek ekhinos, spine).