About: http://webisa.webdatacommons.org/4262186

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	Namely, the discs such as CD, DVD, and BD may be mixed simultaneously, or a rewritable disc capable of overwriting data and a recordable disc capable of recording data may be mixed simultaneously.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com