About: http://webisa.webdatacommons.org/180538660

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	Thus, according to this invention, a soft material such as gel which has been difficult to use as a filter material because of its poor strength can now be used as a filter.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com