About: http://webisa.webdatacommons.org/378086863

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	By singly connected it states the graph is connected i.e. there is a simple path from u-->v for all u,v in V and that there are at most one of these paths.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com