About: http://webisa.webdatacommons.org/300818711

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	Event_Keys table int and varchar to normalise them and an index would be a start, the text field is a problem though...
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com