About: http://webisa.webdatacommons.org/244038432

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	David is an author, a lecturer and technical editor of books, curriculum, certification exams, and computer-based training videos.
http://www.w3.org/ns/prov#wasQuotedFrom	sans.org