About: http://webisa.webdatacommons.org/30438063

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	If a soft material such as silver or aluminum or zinc is used as shown in Table 1, this material must be coated with a harder material to prevent the data head from permanently deforming the material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com