About: http://webisa.webdatacommons.org/339765655

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	Optionally, covers 15 may be constructed from a reusable material, such as plastic or metal.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com