About: http://webisa.webdatacommons.org/421577556

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 clearly understood that the restriction 477 is not necessarily a packer, but could be another type of restriction or item of equipment, such as another well treatment assembly, a liner hanger, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com