About: http://webisa.webdatacommons.org/283414899

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	The pleated spacers may be formed from a variety of materials such as various types of paper and they may assume the form of filter paper similar in composition to that of the medium itself.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com