About: http://webisa.webdatacommons.org/65216168

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	This includes Tumblr, Instagram, the petri dish known as Facebook, Vine, Twitter, and any other site that allows you to share photos. (FAQ, official master post)
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com