About: http://webisa.webdatacommons.org/263246072

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	VirtualBox must be installed on top of an OS whereas Oracle VM Server is a bare-metal and then it has to be installed instead of the OS, making the machine dedicated to the virtualization.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com