About: http://webisa.webdatacommons.org/250883416

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	Tumblr is a very popular microblogging and social networking site that was made available back in 2007.
http://www.w3.org/ns/prov#wasQuotedFrom	qwhatis.com