About: http://webisa.webdatacommons.org/197835417

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	First, an edge between x and y exists if and only if both nodes are an element in
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com