About: http://webisa.webdatacommons.org/44097427

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	Before that date, where you know both names you will need to cross-reference any candidate entries against the other surname to see if there is a match.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net