About: http://webisa.webdatacommons.org/227224584

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	PDAs, like other technologies, can become obsolete virtually overnight ?? even when they appear to be well established.
http://www.w3.org/ns/prov#wasQuotedFrom	dlib.org