About: http://webisa.webdatacommons.org/309569218

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	This definition of trees is not appropriate for a directed graph, because (a) it would have to mention that DAGs including trees can at most be weakly connected, and because (b) it allows multiple root nodes.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com