Assertion: elbow's joint | /r/HasAspect | joint cavity
Facets:
Source sentences:
text: All synovial joints have a joint cavity filled with synovial fluid that is the site at which the bones of the joint articulate with each other.
text: These joints have no joint cavity and are connected via fibrous connective tissue.
text: Fixed joints have no joint cavity, but the bones are connected by fibrous tissue (mostly collagen).