About: http://webisa.webdatacommons.org/382477516

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	BACKGROUND OF THE INVENTION In conventional x-ray systems, a beam of x-rays is directed through an object such as the human body onto a flat x-ray photographic film.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com