About: http://webisa.webdatacommons.org/25300067

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	Alternatively, sand or other material may be placed in the wellbore below the perforations.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de