About: http://webisa.webdatacommons.org/231572157

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	Step 4 - We check whether the node actually exists i.e. the container that was passed in has child elements.
http://www.w3.org/ns/prov#wasQuotedFrom	tutsplus.com