About: http://webisa.webdatacommons.org/383160070

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	An outline is a tree, where each node contains a set of named attributes with string values.
http://www.w3.org/ns/prov#wasQuotedFrom	opml.org