About: http://webisa.webdatacommons.org/398523680

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	A single platter needs two heads i.e. one for top and other for bottom surface.
http://www.w3.org/ns/prov#wasQuotedFrom	recover-hard-drive.org