Assertion: coccyx's surface | /r/HasProperty | posterior
Facets:
Source sentences:
text: The coccyx consists of an apex, base, anterior surface, posterior surface and two lateral surfaces.
text: The coccyx consists of an anterior and posterior surface, two lateral surfaces, an apex and a base.
text: The coccyx consists of an anterior and posterior surface, two lateral surfaces, and apex and a base.