About: http://webisa.webdatacommons.org/272936933

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	This technique avoids the need to add additional shielding material, such as by packing a perpendicularly bored hole with additional shielding material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com