About: http://webisa.webdatacommons.org/164231091

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	If the stiffening members are formed from a strip of material, the material may include, but is not limited to, polyolefins such as polypropylene and polyethylene, cardboard, paper, polyethylene terephthalate, or any semi-stiff polymer.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com