PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The concrete backerboard is a superior substrate or underlayment for stucco, ceramic tile, marble, and other tile-like surfaces located in wet areas, such as shower walls and bathtub surrounds, and building exterior walls. [0005] Typically, the concrete core of the backerboard is a low density, high compressive strength, concrete core.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com