About: http://webisa.webdatacommons.org/88699121

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, in the case of the synchronization signal from the optical disc, there is a case that such a signal can not be acquired from the disc due to its defect or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com