About: http://webisa.webdatacommons.org/27767320

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	At that time, the optical magnetic disc apparatus monitors a signal, such as tracking error signal, focus error signal, etc., to detect whether or not there is any abnormality in erasing processing or recording processing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com