About: http://webisa.webdatacommons.org/167834408

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	Further, materials other than stamped spring steel can be used to implement a backing spring, such as composites, flexible polymeric material or other resilient materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com