About: http://webisa.webdatacommons.org/255741990

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	Screening (see also screen filter) ??? The first step in purifying surface water is to remove large debris such as sticks, leaves, rubbish and other large particles which may interfere with subsequent purification steps.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org