About: http://webisa.webdatacommons.org/21732021

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	The concepts of an edge (line) and a vertex are given precise definitions in graph theory, such that an edge is a link which has a vertex at each end.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com