PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Due to the unequal distribution of weight along a human body, its contours, and an individual's preferred sleeping position, e.g., side or back, a mattress surface formed from a core of inner springs may sometimes create localized pressure points in some areas, such as shoulders and hips, while lacking support at other areas, such as the back.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com