About: http://webisa.webdatacommons.org/85041216

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	But, in general, nulls are an indicator that you should look at your overall design more closely.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com