About: http://webisa.webdatacommons.org/56218075

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	Twitter is the largest site of its type, and I see there is a bunch of alternatives.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com