About: http://webisa.webdatacommons.org/21638729

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	These days, in ???modern??? languages such as Java, C# and VB.NET we have the null value, which is assigned to any reference type variable by default.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com