About: http://webisa.webdatacommons.org/235550958

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	Unlike url_to_postid() you do not have to know the URL and it works on taxonomies and custom post types too (if I remember this correct).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com