Assertion: knee's joint | /r/HasAspect | bone
Facets:
value: together
type: MANNER
value: with articulating surfaces
type: OTHER
Source sentences:
text: Planar joints have bones with articulating surfaces that are flat or slightly curved faces.
text: A joint thus holds bones together (it is called a "joint" because it "joins" them) but also keeps them slightly separated to prevent their damaging each other in motion.