About: http://webisa.webdatacommons.org/153163913

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 SIOC ontology might be what you are looking for. its purpose is to express information about blogs, forums, wikis and other kinds of social media sites.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com