About: http://webisa.webdatacommons.org/455913372

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Normally, cartilage and other tissues and fluids protect the joint and form a perpetually replenished slippery surface that prevents the ends of adjoining bones from grinding together.
http://www.w3.org/ns/prov#wasQuotedFrom	pharmacytimes.com