About: http://webisa.webdatacommons.org/157198189

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	Although this technique has problems related to synchronization, searching on tags is an efficient operation on sql and the content is not too much to worry about replication or sharding.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com