Assertion: knee's joint | /r/HasProperty | synovial
Facets:
Source sentences:
text: The knee is a synovial joint, which means it is lined by synovium.
text: These types of joints are highly moveable and all have a synovial capsule (collagenous structure) surrounding the entire joint, a synovial membrane which secretes synovial fluid, a lubricating liquid, and cartilage known as hyaline cartilage which pads the ends of the articulating bones.