About: http://webisa.webdatacommons.org/217880231

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	It is to be noted that it is possible to change mesh roughness or filtration grade of the filters to be used, into two stages, and the two kinds of filters may be used simultaneously.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es