About: http://webisa.webdatacommons.org/187800314

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	Plastics other than the polyester, for example, polystyrene, which could not be removed in the pretreating step and floated to the EG liquid surface, were removed herein by solid-liquid separation.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com