About: http://webisa.webdatacommons.org/67098627

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	Finally, the system determines whether there are commands or data available (if the lead-in track field 30 says that commands or data are to be found at all in the data blocks).
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com